参数资料
| 型号： | BD8157EFV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUP 1-CH HTSSOP-B20 |
| 标准包装： | 2,500 |
| 应用： | TFT-LCD 面板：伽玛缓冲器，VCOM 驱动器 |
| 电流 - 电源： | 1.2mA |
| 电源电压： | 2.1 V ~ 4 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-HTSSOP-B |
| 包装： | 带卷 (TR) |
Power Supply IC Series for TFT-LCD Panels
S ingle -channel Source Voltage
Output Power Supply + Gamma Buffer Amp ICs
BD8151EFV,BD8157EFV
No.09035EBT11
● Description
The BD8151EFV,BD8157EFV power supply IC are designed for use with TFT-LCD panels. It incorporates a built-in source
voltage step-up switching regulator and gamma correction buffer amp. The combination of a source power supply and
gamma correction buffer on a single chip delivers significant cost savings.
Compatible with input voltages from 2.5 V to 5.5 V (BD8151EFV), 2.1 V to 4.0 V (BD8157EFV), the IC supports low-voltage
operation and reaches over 85% efficiency with a 2.5 V input, contributing to low power consumption designs.
● Features
1) Single-chip implementation of a source power supply and gamma correction buffer
2) Support for low-voltage operation, with input voltages from 2.5 V to 5.5 V (BD8151EFV)
2.1 V to 4.0 V (BD8157EFV)
3) Built-in 1.4 A, 0.2 ? low-voltage FET
4) Switchable step-up DC/DC switching frequencies: 600 kHz/1.2 MHz
5) Current mode PWM control
6) Under-voltage lockout protection circuit
7) Built-in overcurrent protection circuit
8) Built-in thermal shutdown circuit
● Applications
Satellite navigation systems, laptop PC TFT LCD panels
LCD monitor panels
● Absolute maximum ratings (Ta = 25 ℃ )
Parameter
Power supply voltage
Power dissipation
Symbol
Vcc
Pd
Limit
7
1000*
Unit
V
mW
Operating temperature range
Storage temperature range
Switching pin current
Switching pin voltage
VS voltage
Maximum junction temperature
BD8151EFV
BD8157EFV
Topr
Tstg
Isw
Vsw
VS
Tjmax
? 40 to +85
? 40 to +125
? 55 to +150
1.5**
15
15
150
℃
℃
A
V
V
°C
* Reduced by 8 mW/ ℃ over 25 ℃ , when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm).
** Must not exceed Pd.
● Recommended Operating Ranges (Ta = 25 ℃ )
Parameter
Power supply voltage BD8151EFV
Power supply voltage BD8157EFV
Switching current
Switching pin voltage
VS pin voltage
Symbol
Vcc
Vcc
ISW
VSW
VS
Min.
2.5
2.1
—
—
5
Limit
Typ.
3.3
2.5
—
—
9
Max.
5.5
4.0
1.4
14
14
Unit
V
V
A
V
V
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
1/17
2009.07 - Rev.B
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