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YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
Description
The YB1210 family consists of a series of
300mA ultra-low-noise, low dropout (LDO)
linear regulators especially designed for
battery-powered RF and wireless
applications. The YB1210 regulator
achieves a low 450mV dropout at 250mA
load current of 3.3V output, ultra-low output
voltage noise of 15µVrms and PSRR of
57dB at 1KHz.
The YB1210 regulators are also optimized
to work with low-ESR and low cost ceramic
capacitors reducing the amount of board
space critical in hand-held devices. The
YB1210 requires only 0.47 µF output
capacitor for stability with any load. The
YB1210 consumes less than 1µA in
shutdown mode.
Other features include high output voltage
accuracy and current limiting protection.
The YB1210 regulators are available in
SOT-23 / SOT-25 / SOT-89 packages.
Features
„ High Accuracy +-2% Output Voltage
„ Ultra-Low-Noise Low-Drop-Out
Regulator with 1.8/2.5/2.6/2.8/3.0V/3.3V
Preset Outputs
„ Stable with 0.47µF Ceramic Capacitor
for Any Load
„ Allowable Output Current: 300mA
„ Low Quiescent Current: ~90µA
„ 450mV Dropout at 250mA Load (3.3V)
„ Only Need Input and Output Capacitors
„ Power Saving Shutdown Mode (<1µA)
„ Thermal Protection Shutdown
„ Built-In Internal Soft-Start
„ Output Short-circuit Current Limit
Protection
„ Green package (RoHS) available
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 Circuitry
INPUT
Cin=0.47uF
ON
OFF
YB1210
IN OUT
OUTPUT PRESET
Cout=0.47uF
EN
NC or
Bypass
GND
Cbypass
=30nF
YB1210 MRev.1.5
Figure 1-1. SOT-25 application circuit
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YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
Pin Configuration
Figure 1-2. SOT-23 / SOT-89 application circuit
Pin Description
Table 1
Pin Name
SOT-25 Description
1 IN Unregulated Input Supply
Pin Name
SOT-89 Description
1 GND Ground Pin
2 GND Ground Pin
2 IN Unregulated Input Supply
3 EN Pull High To Enable The Regulator 3 OUT Regulated Voltage Output
No Connection For Normal Pin Name
SOT-89R Description
4
N.C. or Operation Or Noise Bypass For
Bypass Ultra-Low-Noise
1
OUT Regulated Voltage Output
Operation By A 30nF Cap. To GND 2 GND Ground Pin
5 OUT Regulated Voltage Output
3 IN Unregulated Input Supply
Pin Name
SOT-23 Description
1 GND Ground Pin
2 OUT Regulated Voltage Output
3 IN Unregulated Input Supply
YB1210 MRev.1.5
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Ordering Information
YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
Marking Information
YB1210 MRev.1.5
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YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
Absolute Maximum Ratings
Recommended Operating Conditions
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 ............. -65to +150
Lead Temperature............................................ +250
Thermal Resistance (SOT-23/25, θJA).......... 280/W
Thermal Resistance (SOT-89, θJA)............... 180/W
Internal Power Disspation (SOT-23/25, PD)........0.4W
Internal Power Disspation (SOT-89, PD)...........0.55W
Input Supply Voltage................................ 2V to 6.0V
Operating Temperature..................... -40to +85
ESD Susceptibility (HBM).................................. 2KV
ESD Susceptibility (MM)...................................200V
Electrical Characteristics
Table 3 TA = 25, VIN = ( VOUT + 1 V ), CIN = COU T = 0.47µF, VEN = VIN
Function Parameter
Input Voltage Range
Output Voltage
Output Voltage Accuracy
Output Current Limit
Dropout Voltage (See Note 1)
Ground Current
Line Regulation
Load Regulation
Shutdown Supply Current
Conditions
Predefined (metal masks)
IOUT = 10mA
Short-circuit output
VOUT = 3.3V, IOUT = 250mA
VOUT = 3.0V, IOUT = 250mA
VOUT = 2.8V, IOUT = 250mA
VOUT = 2.6V, IOUT = 250mA
VOUT = 2.5V, IOUT = 250mA
VOUT = 1.8V, IOUT = 250mA
IOUT = 0 mA
VIN = (VOUT+1V) to 6.0V, IOUT = 10 mA
IOUT = 1mA to 250mA
EN=0V
Min Typ Max Units
2.0 6.0
1.8 3.3
-2.0 +2.0
200 250
450 550
470 590
500 600
520 620
540 640
800 900
90 150
0.3 0.5
1.2 3
~0.01
V
V
%
mA
mV
µA
%/V
%
µA
YB1210 MRev.1.5
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YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
Ripple Rejection (PSRR)
Output Noise Voltage
f = 100Hz, IOUT=1mA
f = 1KHz, IOUT=1mA
f = 10KHz, IOUT=1mA
f = 100Hz to 100KHz,
Iload=10mA, Bypass=0nF
f = 100Hz to 100KHz,
Iload=10mA, Bypass=30nF
55
57 dB
55
45 µVrms
15 µVrms
Shutdown Exit Delay (See Note 2) Rload=50ohm
45 300
µs
EN Logic Low Level
EN Logic High Level
EN Input Bias Current
Thermal Shutdown
VIN=2.0V to 5.5V
VIN=2.0V to 5.5V
VIN=5.5V, SHDN=0V or 6V
Shutdown Temperature
0.4
1.2 VIN
0.01
160
V
V
µA
Thermal-Shutdown Hysteresis
20
Note1 : The drop out voltage varies depending on output voltage selection
Dropout is defined as VIN – VOUT when VOUT is 100mV below VOUT where Vin=Vout + 1V for nominal
VOUT.
Note 2: Time needed for VOUT to reach 90% of final value.
Typical Characteristics
At TA=25, VIN=(VOUT+0.5V), CIN=COUT=0.47µF, VEN=VIN, unless otherwise noted.
Dropout Voltage vs Load Current
900
800
700 Vo=1.8V
600
500 Vo=2.5V
400
300
200 Vo=3.3V
100
0
0 10 30 50 70 90 110 130 150 170 190 210 230 250
Load Current (mA)
140
120
100
80
60
40
20
0
0.0
Ground Current vs. Input Voltage
Vo=3.3V
1.0 2.0 3.0 4.0
Input Voltage (V)
5.0
YB1210 MRev.1.5
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