BLI9184
BLI9184 is 3.0-A Synchronous Step-Down Converter manufactured by SHANGHAI BELLING.
Features
3.0-A Output Current High Efficient Integrated FETs Optimized for portable application: 85mΩ (High side) and 75mΩ (Low side) High Efficiency Up to 96% Efficiency @ 5V Input, 3.3V Output Up to 94% efficiency @ 12V Input, 3.3V Output Wide Input Voltage Range: 4.75V to 18V @ 3.0-A loading Wide Output Voltage Range: 0.923V to 14V @ 3.0-A loading ( 54Watt output @max) Low Output Ripple and Allows Ceramic Output Capacitor Thermal Shutdown Protection 340-KHz Switching Frequency(fsw) Cycle By Cycle Over Current Limit +/-1.5% High Accuracy Feedback Voltage
Applications
Wide Range of Applications for Low Voltage System
- Digital TV Power Supply
- High Definition Blu-ray Disc Players
- Networking Home Terminal
- Digital STB
- Ideal for Portable Applications
Descriptions
The BLI9184 is a current mode synchronous buck converter, and has a proprietary W-mode™® Gm curvature circuit that enables fast transient response, enables the device to adopt to both low ESR output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
The BLI9184 operates from 4.75-V to 18-V Vin input, and the output voltage can be programmed between 0.923V to 14v with 3.0A output current, and +/-1.5% high accuracy output voltage.
Due to 85mΩ (High side) and 75mΩ (Low side) integrated FETs, the BLI9184 works in high efficiency (up to 94% @12V Input, 3.3V output) .
Typical Application
Input 4.3V
- 18V
C3 10n F
C1 10µF/25V Ceramic
C8 0.47µF
R4 100K 2
7 EN
BS 3 SW
8 FB 5
SS P G
64 C4 6.8n F
R3 2.2K
L1 10µH
R1 26.1K
1% R2 10K 1%
Output
3.3V 3A
Cout 10µF/4.5V Ceramic X2
Page1
.belling..cn
V1.3
PIN ARRANGEMENT
PIN FUNCTIONS
NAME BS
IN...