YB1230
600mA, Low-Noise LDO Regulator
Description
The YB1230 is a series of low-noise, low dropout (LDO) linear regulators with 2.0% output voltage accuracy. The YB1230 regulators achieve a low 500mV dropout at 600mA load current of 3.1V output and are available in voltages ranging from 1.8V to 3.1 V with 0.1 V per step (custom voltage is considerable at request).
The YB1230 regulators are optimized to work with low-ESR and low cost ceramic capacitors, reducing the amount of board space critical in hand-held devices. The YB1230 requires only 2.2μF output capacitor for stability with any load and consumes less than 1μA in shutdown mode.
Built-in thermal shutdown and short-circuit protect offer secure protection against fault operation. The YB1230 regulators are available in SOT-23 / SOT-25 / SOT-89 packages.
Features
2.0% Accuracy Output Voltage
Output Voltage Range 1.8V ~ 3.1V
Low-Noise Low-Drop-Out
Stable with 2.2μF Ceramic Capacitor for
Any Load
Typical Output Current : 600mA
Low Quiescent Current : ~90μA
500mV Dropout at 600mA Load (3.1V)
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 Circuit
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Figure 1-1: SOT-25 Application Circuit |
Figure 1-2: SOT-23/SOT-89 Application Circuit |
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YB1230 Rev.1.6 |
www.yobon.com.tw |
1 |
YB1230
600mA, Low-Noise LDO Regulator
Pin Configuration
Figure 2: Pin Configuration
Pin Description
Table 1
Name |
Description |
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VIN |
Unregulated input supply. Bypass with a capacitor to GND. |
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GND |
Ground pin. |
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EN |
Pull high to enable the regulator. |
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VOUT |
Regulated output voltage. Bypass with a capacitor to GND. |
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YB1230 Rev.1.6 |
www.yobon.com.tw |
2 |
YB1230
600mA, Low-Noise LDO Regulator
Ordering Information
Marking Information
Absolute Maximum Ratings (Note 1)
Supply Voltage............................ |
|
- 0.3V to 6V |
Output Voltage ................ |
-0.3V to (VIN+0.3V) |
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Output Short-Circuit Duration |
..............Infinite |
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Junction Temperature Range............ |
+150 |
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Storage Temperature Range...... |
- 65 to +150 |
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Lead Temperature............................. |
|
+250 |
RecommendedOperating Conditions
|
(Note 2) |
Input Supply Voltage............... |
2.0V to 5.5V |
Operating Temperature........ |
-40 to +85 |
Thermal In formation |
(Note 3) |
Thermal Resistance (SOT-23/25, θJA) |
... 280 /W |
Thermal Resistance (SOT-89, θJA)......... |
180 /W |
Internal Power Dissipation (SOT-23/25, PD) . 0.4W
Internal Power Dissipation (SOT-89, PD).....0.55W
Note:
1.Exceeding these ratings may damage the device.
2.The device is not guaranteed to function outside of its operating conditions.
3.θJA is measured in free air at TA = 25 on a low effective thermal conductivity board.
YB1230 Rev.1.6 |
www.yobon.com.tw |
3 |
YB1230
600mA, Low-Noise LDO Regulator
Electrical Characteristics
Table 2 VIN = ( VOUT + 1V ), CIN = COUT = 2.2μF, VEN = VIN, TA=25°C, unless otherwise noted.
Description |
Symbol |
Test Conditions |
MIN |
TYP |
MAX |
Units |
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Input Voltage Range |
VIN |
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2.0 |
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5.5 |
V |
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Output Voltage |
VOUT |
Predefined |
1.8 |
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3.1 |
V |
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Output Voltage Accuracy |
VOUT |
IOUT = 10mA |
-2.0 |
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+2.0 |
% |
Output Current Limit |
ISC |
Short-Circuit Output |
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380 |
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mA |
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VOUT = 3.2V, IOUT = 600mA |
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500 |
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VOUT = 3.0V, IOUT = 600mA |
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520 |
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Dropout Voltage (Note 1) |
VDROP |
VOUT = 2.5V, IOUT = 600mA |
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600 |
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mV |
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VOUT = 2.0V, IOUT = 600mA |
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750 |
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VOUT = 1.8V, IOUT = 600mA |
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850 |
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Ground Current |
IG |
Iground = IIN - IOUT |
|
90 |
150 |
μA |
Line Regulation |
VLINE |
VIN=(VOUT+1V) to 5.5V, IOUT=10mA |
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0.3 |
|
%/V |
Load Regulation |
VLOAD |
IOUT = 1mA to 600mA |
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2 |
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% |
Shutdown Supply Current |
ISD |
EN = 0V |
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1 |
μA |
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f = 100Hz, IOUT = 10mA |
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56 |
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Ripple Rejection (PSRR) |
PSRR |
f = 1KHz, IOUT = 10mA |
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56 |
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dB |
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f = 10KHz, IOUT = 10mA |
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45 |
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Shutdown Exit Delay (Note 2) |
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VOUT = 2.8V, Rload = 9 ohm |
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40 |
100 |
μs |
EN Logic Low Level |
VIL |
VIN = 2.0V to 5.5V |
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0.4 |
V |
EN Logic High Level |
VIH |
VIN = 2.0V to 5.5V |
1.5 |
|
VIN |
V |
EN Input Bias Current |
IBEN |
VIN = EN = VOUT +1V |
|
0.01 |
|
μA |
Thermal Shutdown |
TSD |
Shutdown Temperature |
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160 |
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°C |
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Thermal Hysteresis |
THYS |
VOUT = 1.8V, IOUT = 100mA |
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20 |
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°C |
Note :
1.The drop out voltage varies depending on output voltage selection. Dropout is defined as VIN – VOUT when VOUT is 100mV below nominal VOUT where VIN = VOUT + 1V for nominal VOUT.
2.Time needed for VOUT to reach 90% of final value.
YB1230 Rev.1.6 |
www.yobon.com.tw |
4 |