G5719B Datasheet PDF - Global Mixed-mode Technology
| Part Number | G5719B | |
| Description | 3A Synchronous Step-Down Regulator | |
| Manufacturers | Global Mixed-mode Technology | |
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Global Mixed-mode Technology
G5719B
1MHz, 3A Synchronous Step-Down Regulator
Features
High Efficiency: Up to 95%
Low Quiescent Current: Only 50µA During Opera-
tion
Internal Soft Start Function
Output Current
G5719BTB1U: 2A Continuous, 3A Peak
G5719BRC1U: 3A Continuous
2.5V to 6V Input Voltage Range
1MHz Switching Frequency
No Schottky Diode Required
100% Duty Cycle in Dropout Operation
0.6V Reference Allows Low Output Voltages
<1µA Shutdown Current
Current Mode Operation for Excellent Line and
Load Transient Response
Over Temperature Protected
RoHS Compliant
Power Good
Output Short Circuit Latch-off Protection
Output Overvoltage Latch-off Protection
Applications
Cellular Telephones
Personal Information Appliances
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
Digital Still and Video Cameras
MP3 Players
Portable Instruments
General Description
The G5719B is a high efficiency monolithic synchronous
buck regulator using a constant frequency, current mode
architecture. Supply current during operation is only 50µA
and drops to <1µA in shutdown. The 2.5V to 6V input
voltage range makes the G5719B ideally suited for single
Li-Ion battery-powered applications. 100% duty cycle pro-
vides low dropout operation, extending battery run time in
portable systems. Switching frequency is internally set at
1MHz, allowing the use of small surface mount inductors
and capacitors. The internal synchronous switch increase
efficiency and eliminates the need for an external Schot-
tky diode. Built-in soft start function eliminates in-rush
current that could damage the system. Output latch-off
operation protects the step-down regulator from damage
under short circuit and overvoltage conditions.
Ordering Information
ORDER
NUMBER
MARKING
OUTPUT
VOLTAGE
G5719BT11U
519Bx
Adjustable
G5719BTB1U
519Bx
Adjustable
G5719BRC1U
519B
Adjustable
Note: T1: SOT-23-5 TB: SOT-23-6 RC: TDFN2X2-8
1: Bonding Code
U: Tape & Reel
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOT-23-5
SOT-23-6
TDFN2X2-8
Pin Configuration
Typical Application Circuit
EN 1
G5719B
5 VFB
GND 2
LX 3
4 VIN
SOT-23-5
G5719B
EN 1
6 VFB
GND 2
5 PG
LX 3
4 VIN
SOT-23-6
G5719B
VFB 1
PG 2
VIN 3
GND 4
Thermal
PPaadd
8 GND
7 EN
6 LX
5 NC
TDFN2X2-8
VIN
4~6V
CIN
2.2µF
CER
G5719B
VIN PG
LX
EN
GND VFB
VOUT = 0.6V • (1+
R1
R2
)
R
10k
2.2µH
VIN
CFB* (option)
R1
R2 82k
18k
VOUT
3.3V
2A
COUT
10µF
CER
Ver: 0.5
Sep 25, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for G5719B electronic component. |
| Information | Total 1 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ G5719B.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| G5719 | The function is 2A Synchronous Step-Down Regulator. Global Mixed-mode Technology | |
| G5719B | The function is 3A Synchronous Step-Down Regulator. Global Mixed-mode Technology | |
| G5719C | The function is 3A Synchronous Step-Down Regulator. Global Mixed-mode Technology | |
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