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参数资料
| 型号： | BD8151EFV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY 1CH 20HTSSOP |
| 标准包装： | 2,500 |
| 应用： | LCD 监视器，笔记本电脑显示器 |
| 电流 - 电源： | 1.2mA |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-HTSSOP-B |
| 包装： | 带卷 (TR) |
BD8151EFV, BD8157EFV
Technical Note
● Electrical Characteristics BD8157EFV (Unless otherwise specified, Ta = 25 ℃ ; Vcc = 2.5V, ENB = 2.5V)
Parameter Symbol
[Triangular waveform oscillator]
Limit
Min. Typ. Max.
Unit Conditions
Oscillating frequency 1
Oscillating frequency 2
FOSC1
FOSC2
480
0.96
600
1.20
720
1.44
kHz
MHz
FCLK = 0 V
FCLK = Vcc
[Overcurrent protection circuit]
Overcurrent limit
ISW
—
2
—
A
[Soft start circuit]
SS source current
ISO
6
10
14
μA
Vss = 0.5 V
[Under-voltage lockout protection circuit]
Off threshold voltage
On threshold voltage
VUTOFF
VUTON
1.7
1.6
1.8
1.7
1.9
1.8
V
V
[Error amp]
Input bias current
IB
—
0.1
0.5
μA
Feedback voltage
VFB
1.232
1.245
1.258
V
Buffer
[Output]
On resistance
Max. duty ratio
RON
DMAX
—
75
200
85
600
95
m ?
%
*Isw = 1 A
RL = 100 ?
[ENB]
ENB on voltage
ENB off voltage
VON
VOFF
Vcc × 0.7
—
Vcc
0
—
Vcc × 0.3
V
V
[Overall]
Standby current
Average consumption current
ISTB
ICC
—
—
0
1.2
10
2.4
μ A
mA
VENB = 0 V
no switching
[Amp]
Input bias current
Drive current 1
Drive current 2
Max. output current
Min. output current
Ibo
IOO1
IOO2
Voho
Vohl
? 1
50
120
VS-0.16
—
0
70
200
VS-0.1
0.1
1
140
400
—
0.16
μ A
mA
mA
V
V
IN += 4.5 V
OUT1 to OUT4
VCOM
Io = ? 5 mA, IN += VS
Io = 5 mA, IN += 0 V
? This product is not designed for protection against radio active rays.
* Design guarantee (No total shipment inspection is made.)
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
3/17
2009.07 - Rev.B
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