YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Features
Description
High Accuracy +-2%
The YB1200 family consists of a series of
Ultra-Low-Noise Low-Drop-Out
150mA ultra-low-noise, low dropout (LDO)
Regulator with 1.8/2.5/2.6/2.8/3.0/3.3V
linear regulators especially designed for
Preset Outputs
battery-powered RF and wireless Stable with 0.47µF Ceramic Capacitor applications. The YB1200 regulator for Any Load
achieves a low 250mV dropout at 150mA Typical Output Current: 150mA load current of 3.3V output, ultra-low output Low Quiescent Current: ~90µA
voltage noise of 15µVrms and PSRR of 250mV Dropout at 150mA Load (3.3V) 57dB at 1KHz. Only Need Input and Output Capacitors
Power Saving Shutdown Mode (<1µA)
The YB1200 regulators are also optimized Thermal Protection Shutdown to work with low-ESR and low cost ceramic Built-In Internal Soft-Start
capacitors reducing the amount of board Output Short-circuit Current Limit
Protection space critical in hand-held devices. The
YB1200 requires only 0.47 µF output Green package (RoHS) available
capacitor for stability with any load. The YB1200 consumes less than 1µA in shutdown mode.
Other features include high output voltage accuracy and current limiting protection. The YB1200 regulators are available in a tiny SC-70 / SC-82 package.
Applications
PDA, Palmtops and Notebook Computers DSC, Handset Camera Modules PCMCIA Cards, PC Cameras
USB Based Portable Devices (MP3, PMP) GSM/GPRS/3G RF Transceiver Modules Wireless LANs, Bluetooth Portable Radios
Typical Application Circuit
INPUTINCin=0.47uFONOFFEN
YB1200 OUT OUTPUT PRESETNC orBypassGNDCout=0.47uF
Cbypass=30nF
Figure 1-1. SC-70 application circuit
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
GNDONOFFINPUTINCin=0.47uFENYB1200OUTOUTPUT PRESETCout=0.47uF
Pin Configuration
SC-70 Figure 2. Pin configuration
Pin Description
Table 1
Figure 1-2. SC-82 application circuit
Pin Name 1 IN Unregulated Input Supply. 2 GND Ground pin. 3 4 5
EN N.C.
Pull high to enable the regulator.
SC-70 Description
No external connection needed for normal operation.
Noise Bypass for Ultra-Low-Noise Operation by connecting a 30nF capacitor from
Bypass
Bypass to GND. OUT
Regulated Output Voltage. Bypass with a capacitor to GND.
SC-82 Description
Pin Name 1
EN
Pull high to enable the regulator.
2 GND Ground pin. 3
OUT
Regulated Output Voltage.
4 IN Unregulated Input Supply.
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Ordering Information
Table 2
YB1200 Order Information
Output Voltage Grade Order Information Package Marking SC70-5 Small Package
1.8 2.5 2.6 2.8 3.0 3.3
Green Package+ Standard YB1200SC70S-1.8GGreen Package+ Standard YB1200SC70S-2.5GGreen Package+ Standard YB1200SC70S-2.6GGreen Package+ Standard YB1200SC70S-2.8GGreen Package+ Standard YB1200SC70S-3.0GGreen Package+ Standard YB1200SC70S-3.3G
SC-82 Small Package
1.8 2.5 2.6 2.8 3.0 3.3
Green Package+ Standard YB1200SC82S-1.8GGreen Package+ Standard YB1200SC82S-2.5GGreen Package+ Standard YB1200SC82S-2.6GGreen Package+ Standard YB1200SC82S-2.8GGreen Package+ Standard YB1200SC82S-3.0GGreen Package+ Standard YB1200SC82S-3.3G
DA DB DE DC DF DD
3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel
BA BB BE BC BF BD
3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel3000 Units Tape & Reel
Supplied as:
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Recommended Operating Conditions
Input Supply Voltage................................2V to 6.0V Operating Temperature.....................-40℃ to +85℃
Absolute Maximum Ratings
Supply Voltage........................................-0.3V to 7.0V Output Voltage...............................-0.3V to (VIN+0.3V) Output Short-Circuit Duration...........................Infinite Junction Temperature Range...........................+150℃ Storage Temperature Range.............-65℃ to +150℃
ESD Susceptibility (HBM)...........................................2KV ESD Susceptibility (MM)...........................................200V
Lead Temperature............................................+250℃ Thermal Resistance (SC-70/82, θJA)............330℃/W Internal Power Disspation (SC-70/82, PD)……...0.3W Electrical Characteristics Table 3 TA = 25℃ , VIN = ( VOUT + 1V ), CIN = COUT = 0.47µF, VEN = VIN Function Parameter Conditions
Voltage Range Input
Predefined (metal masks) Output Voltage
Output Voltage Accuracy IOUT = 10mA Output Current Limit Short-circuit output VOUT = 3.3V, IOUT = 150mA VOUT = 3.0V, IOUT = 150mA V= 2.8V, I= 150mA OUT OUT (See Note 1)
Dropout Voltage VOUT = 2.6V, IOUT = 150mA
VOUT = 2.5V, IOUT = 150mA
VOUT = 1.8V, IOUT = 150mA
Ground Current IOUT = 0 mA Line Regulation VIN = (VOUT + 1V) to 6.0V, IOUT = 10 mA Load Regulation IOUT = 1mA to 150mA
Shutdown Supply Current EN=0V
YB1200 MRev.1.4
Min Typ Max Units
2.0 6.0 V 1.8 -2.0
200 250 275 300 310 320 500 90 0.3 1.2 ~0.01
3.3 +2.0
µA %/V % µA mV V % mA
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Output Noise Voltage Ripple Rejection (PSRR)
f = 100Hz, IOUT1mA 52 dB f = 1KHz, IOUT1mA 55 53 f = 10KHz, IOUT1mA f = 100Hz to 100KHz, Iload=10mA, Bypass=0nF f = 100Hz to 100KHz,
Iload=10mA, Bypass=30nF
45 µVrms 15 µVrms 1.2
45 0.01 160 20
300 0.4 VIN
µs V V µA ℃ ℃
(See Note 2)
Shutdown Exit Delay Rload50ohm VIN=2.0V to 5.5V EN Logic Low Level
EN Logic High Level
EN Input Bias Current Thermal Shutdown
Thermal-Shutdown ysteresis
VIN=2.0V to 5.5V VIN=5.5V, EN=0V or 6V Shutdown Temperature
Note1 : The drop out voltage varies depending on output voltage selection
is defined as VIN – VOUT when VOUT is 100mV below VOUT where Vin=Vout +1V for nominal VOUT. Dropout
Note 2: Time needed for VOUT to reach 90% of final value.
=
=
=Typical Characteristics
=At TA= 25℃, VIN = ( VOUT + 1V), CIN = COUT = 0.47µF, VEN = VIN, unless otherwise noted.
Dropout Voltage vs Load Current600Dropout Voltage vs Temperature400Dropout Voltage (mV)Vo=1.8V 400300200100001030507090110130150Dropout Voltage (mV)5003503002502001501005000Vo=2.8V 85℃ Vo=2.5V 25℃ Vo=3.3V Load Current (mA)1030507090110130150
YB1200 MRev.1.4
Load Current (mA)
5
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
ILOAD=1mA
Output Voltage vs. Temperature2.892.88
Output Voltage (V)2.872.862.852.842.832.822.81253545ILoad=1mA ILoad=80mA 55657585Temperature (℃)Ground Current vs. Input Voltage140Ground Current (µA)1201008060402000.01.02.03.04.05.0Input Voltage (V)
6
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Shutdown Delay
Shutdown Exit Delay
Shutdown Voltage
Vo=2.84V RLoad=50Ω Shutdown Voltage
Vo
RLoad=50Ω
Line Transient Response
5V
Load Transient Response
3.34V
CIN = 0.47µF COUT = 0.47µF ILoad = 100µA
100mA100µA
CIN = 0.47µF COUT = 0.47µF VIN = 3.34V
YB1200 MRev.1.4
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
Functional Block Diagram
IN
ENSHUTDOWN ANDPOWER-ON CONTROL THERMALSENSOR
GND
ERROR AMPMOS DRIVERWITH LIMITPOUT REFERENCEAND NOISE BYPASS
Figure 3. Block Diagram
Functional Description
The YB1200 is an ultra-low-noise, transistor gate is pulled high, allowing less low-quiescent current, low-dropout linear current to pass to the output. The parts are regulator. It is supplied in a SC-70 and available with preset output voltages SC-82 package for space and noise ranging from 1.8V to 3.3V. sensitive applications. These devices can
Stability
supply loads up to 150mA. As shown in the
Functional Block Diagram, the YB1200 The YB1200 is a high performance LDO consists of a reference and noise bypass emphasizing stability with low output circuit, error amplifier, output drive capacitance. It is able to maintain stability transistor, internal feedback voltage divider, with an output capacitor as low as 0.47uF. thermal sensor, and short circuit current The output capacitor can also be increased limiter. The internal reference is connected to optimize performance. The YB1200 will to the error amplifier’s inverting input. The remain stable and in regulation with no load, error amplifier compares this reference with unlike many other voltage regulators. the feedback voltage and amplifies the
Internal P-Channel Pass Transistor
difference. If the feedback voltage is lower
than the reference voltage, the The YB1200 features a low impedance pass-transistor gate is pulled low. This P-channel MOSFET pass transistor. This allows more current to pass to the output provides several advantages over similar and increases the output voltage. If the designs using a PNP pass transistor, feedback voltage is too high, the pass including low operating power and longer
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
battery life. The YB1200 consumes only Shortly after the initial power up, the 90µA of quiescent current under most soft-start feature is terminated and normal conditions. operation is resumed. Output Short-Circuit Current Limit The YB1200 includes a current limiter, which monitors and controls the pass transistor’s gate voltage, limiting the output current to about 200 mA, for example, in a short-circuit output situation. Shutdown
The YB1200 also features a low-power active shutdown mode. It has a switch that turns off the device when disabled. This allows the output capacitor and load to discharge and de-energize the load. In the shutdown mode, the internal functional blocks, such as voltage reference and the error amplifier, are turned off completely, and the quiescent current is less than 1µA. Thermal Protection Shutdown
The thermal protection shutdown function protects the device from operating in over temperature condition. When the junction temperature exceeds +160°C, the thermal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool down. The thermal sensor turns the pass transistor on again after the IC’s junction temperature drops to +140°C. Soft-Start Circuitry
The YB1200 includes a soft-start circuitry to limit inrush current at turn-on. During power up, the output capacitor and output load are charged with a reduced output current.
YB1200 MRev.1.4
Application Information
Enable/Shutdown
The YB1200 comes with an active-high enable pin that allows the regulator to be enabled. Forcing the enable pin low disables the regulator and puts it into the shutdown mode. This pin cannot be left floating as it may cause an undetermined state.
Input/Output Capacitor
It is recommended to use a 0.47µF capacitor on the YB1200 input and a 0.47µF capacitor on the output. For high regulation performance, larger input capacitor values and lower ESRs provide better noise rejection and line-transient response. The output noise, load-transient response, stability, and power-supply rejection can be improved by using large output capacitors. Low ESR ceramic capacitors provide optimal performance and save space.
Power Supply Rejection and Transient Response
The PSRR and transient response can be improved by increasing the values of the input and output bypass capacitors, and through passive filtering techniques.
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
SC-70 Package Information
Symbol
Millimeters Inches MIN. MAX. MIN. MAX. A 0.90 1.10 .036 0.44 A1 0.025 0.10 .001 .004 A2 0.875 1.00 .035 .040 b 0.20 0.40 .008 .016 C 0.10 0.15 .004 .006 D 1.90 2.10 .076 .084 E 1.15 1.35 .046 .054 E1 2.00 2.20 .080 .088 e e1 L
0.65 BSC. 1.30 BSC. 0.425 REF.
.026 BSC. .052 BSC. .017 REF.
Note:
1. All dimensions are in millimeters, and the dimensions in inches are for reference only. 2. 1mm=40mils=0.04inches
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YB1200 – High Accuracy
Ultra-Low-Noise, High PSRR LDO Regulator
SC-82 Package Information
NOTE:
1. CONTROLUNG DIMENSION: mm
2. LEAD FRAME MATERIAL:EFTEC-64T 1/2H OR H.
3. DIMENSION D DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS, MOLD
FLASH/PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.15 mm PER SIDE,
4. DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD
FLASH OR PROTRUSION SHALL NOT EXCEED 0.15mm PER SIDE.
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