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LR9211 Datasheet Preview

LR9211 Datasheet

600mA LOW DROPOUT LINEAR REGULATOR

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UNISONIC TECHNOLOGIES CO., LTD
LR9211
Preliminary
600mA LOW DROPOUT
LINEAR REGULATOR
CMOS IC
DESCRIPTION
The UTC LR9211 is a high speed LDO regulator that features
high accurate, low noise, high ripple rejection, low dropout and low
power consumption. Designed with a P-channel MOSFET series
pass transistor, the UTC LR9211 yields extremely low dropout
voltage and maintains very low ground current (70μA).
The UTC LR9211 does not require a bypass capacitor, hence
achieving the smallest PCB area.
Other features include foldback overcurrent protection, quick
soft start, and overtemperature protection. The UTC LR9211 is
available in fixed output voltage from 0.8V to 3.3V with 0.1V per
step or as an adjustable device with a 0.8V reference voltage The
device comes in various packages.
4
5
123
SOT-25
FEATURES
* Wide Input Voltage Range from 2.5V to 5.5V
* Ultra Low Dropout Voltage: 200mV @ VOUT =3.3V, 300mA
* Ultra Fast Response in Line/Load Transient
* Stable with 1uF Ceramic Output Capacitor
* Low Ground Current: 70μA Typical
* Low Shutdown Current: < 1μA
* Foldback Output Current Limit
* High Output Accuracy
1.5% Initial Accuracy
Fixed Output Voltages: 0.8V~3.3V
Adjustable Output Voltage from 0.8V to 4.5V
* Over-Temperature Protection
ORDERING INFORMATION
Note:
Ordering Number
Lead Free
Halogen Free
LR9211L-xx-AF5-R
LR9211G-xx-AF5-R
xx: Output Voltage, refer to Marking Information.
Package
SOT-25
Packing
Tape Reel
LR9211G-xx-AF5-R
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(1) R: Tape Reel
(2) AF5: SOT-25
(3) xx: refer to Marking Information
(4)Green Package
(4) G: Halogen Free and Lead Free, L: Lead Free
www.unisonic.com.tw
Copyright © 2019 Unisonic Technologies Co., Ltd
1 of 6
QW-R102-103.b




UTC

LR9211 Datasheet Preview

LR9211 Datasheet

600mA LOW DROPOUT LINEAR REGULATOR

No Preview Available !

LR9211
MARKING
PACKAGE
VOLTAGE CODE
SOT-25
18: 1.8V
33: 3.3V
AD: ADJ
Preliminary
CMOS IC
MARKING
54
REXX
123
Voltage Code
PIN CONFIGURATION
VOUT
5
NC/FB
4
123
VIN GND EN
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
VIN
GND
EN
FB/NC
VOUT
DESCRIPTION
Input Voltage. This pin connects to the source of the internal pass transistor that
supplies current to the output pin. Bypass VIN to GND with a minimum 1uF ceramic
capacitor. Place the decoupling capacitor physically as close as possible to the
device.
Ground.
Enable Input. Pulling this pin below 0.35V turns the regulator off, reducing the
quiescent current to a fraction of its operating value. This pin is not available for 3-pin
packages.
Feedback Pin(ADJ Version). this pin is connected to an external resistor divider, turns
to adjustable output voltage; VOUT=0.8*(R1+R2)/R1(V); NC Pin(fixed version);
Output Voltage. This pin is power output of the device. A pull low resistance exists
when the device is disabled by pulling low the EN pin. To maintain adequate transient
response to large load change, a minimum 1uF ceramic capacitor is required to
reduce the effects of current transients on VOUT.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R102-103.b


Part Number LR9211
Description 600mA LOW DROPOUT LINEAR REGULATOR
Maker UTC
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