G9185 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 2A Low Input /Low Dropout Linear Regulator

Global Mixed-mode Technology Inc.
G9185
2A Low Input /Low Dropout Linear Regulator
Features
„ Input Voltage as Low as 1. 4V
„ 400mV Dropout @ 2A, as VO is 1.2V
„ ±2% Output Voltage
„ Output Range from 0.5V to 3.8V
„ Over Current and Over Temperature Protection
„ Max. Supply Current is Shutdown Mode <1µA
„ Small Ceramic Output Capacitors
„ Enable Pin
„ SOP-8 (FD) Packages
Applications
„ Telecom/Networking Cards
„ Motherboards/Peripheral Cards
„ Industrial Applications
„ Wireless Infrastructure
„ Set top Boxes
„ Notebook Computers
„ Medical Equipment
„ Battery Powered Systems
Ordering Information
ORDER NUMBER
G9185F11U
Note: F1: SOP-8 (FD)
1: Bonding Code
U : Tape & Reel
Pin Configuration
MARKING
G9185
NC 1
G9185
8 GND
EN 2
VIN 3
Thermal
Pad
7 FB
6 VO
NC 4
5 NC
SOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
General Description
The G9185 is a high performance positive voltage
regulator designed for use in applications requiring
very low Input voltage and low dropout voltage at up to
2Amperes. It operates with a V_IN as low as 1.4V with
output voltage programmable as low as 0.5V. The
supply current is 350µA while V_IN is 3.3V. The G9185
features low dropout, ideal for applications where V_OUT
is very close to V_IN. The over-current protection limit is
set at 3A typical. An over temperature protection cir-
cuit is built-in in the G9185 to prevent thermal overload.
Additionally, the G9185 has an enable pin to further
reduce power dissipation while shutdown. In the shut-
down mode, the maximum supply current is less than
1µA. The G9185 provides excellent regulation over
variations in line, load and temperature.
The G9185 is available in the SOP-8 (FD) package.
The output voltage can be set via an external divider
or to fixed settings of 0.5V and 1.2V depending on
how FB pin is configured.
TEMP. RANGE
-40°C ~ +85°C
PACKAGE
(Green)
SOP-8 (FD)
Typical Application Circuit
VIN
ENABLE
C1
1
NC
5
NC
3 _VIN
VO ⁶
2
G9185
EN
FB ⁷
4 _NC
R1
GND ⁸
R2
VO
0.5(R1+R2)
VO=
(V)
R2
C2
VIN
ENABLE
C1
1 _NC
NC ⁵
3 _VIN
6
VO
2
G9185
EN
7
FB
4
NC
8
GND
VO
VO=0.5V
C2
VIN
ENABLE
C1
1 _NC
NC ⁵
3 _VIN
VO ⁶
2
G9185
7
EN
FB
4 _NC
GND ⁸
VO
VO=1.2V
C2
Ver: 0.2
Oct 20, 2010
TEL: [phone]
http://www.gmt.com.tw
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