参数资料
型号: BD9740KN-E2
厂商: Rohm Semiconductor
文件页数: 6/15页
文件大小: 0K
描述: IC REG BUCK BST INV SYNC 48UQFN
标准包装: 2,500
类型: 降压(降压),升压(升压),反相
输出数: 7
输入电压: 1.5 V ~ 10 V
频率 - 开关: 100kHz ~ 1.2MHz
电流 - 输出: 30mA
同步整流器:
工作温度: -20°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-VFQFN
包装: 带卷 (TR)
供应商设备封装: 48-UQFN
BD9739KN,BD9740KN
● Block diagram and application circuit (2) BD9740KN
Technical Note
Connect a capacitor to prevent
oscillation to the VREF pin.
(See page 7.)
For more information
about setting the SCP pin,
see page 7.
Connect a capacitor to prevent
oscillation to the VREGA pin.
(See page 7.)
Connect a capacitor
for setting the soft
start time.
(See page 8&9.)
The soft start times
for CH2 to CH4 are
fixed internally.
(See page 9.)
Apply the PVCCH pin voltage
with an external charge pump.
(See page 4.)
Connect a capacitor
for soft start at TC
pin.
(See page 8.)
Connect a resistor for
setting the output
voltage. (See page 8.)
Set the operating frequency
with the RT and CT pins.
(See page 8.)
This pin is used as the
on/off control pin.
(See page 7.)
Set whether CH1, CH2, and CH3 will be
used as step-up or step-down.
(See page 7.)
Fig. 3 BD9740KN Application Circuit
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
6/14
2010.09 - Rev.A
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