BD9740KN-E2 Rohm Semiconductor, BD9740KN-E2 Datasheet - Page 6

• Manufacturer Part Number: BD9740KN-E2
• Description: IC SWITCH REG W/FET 48UQFN
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, PWMr

Specifications of BD9740KN-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 7
• Voltage - Output: -
• Current - Output: 30mA
• Frequency - Switching: 100kHz ~ 1.2MHz
• Voltage - Input: 1.5 V ~ 10 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Block diagram and application circuit (2) BD9740KN
Connect a capacitor
for setting the soft
start time.
(See page 8&9.)
Connect a capacitor
for soft start at TC
pin.
(See page 8.)
BD9739KN,BD9740KN
© 2010 ROHM Co., Ltd. All rights reserved.
The soft start times
for CH2 to CH4 are
fixed internally.
(See page 9.)
www.rohm.com
Connect a resistor for
setting the output
voltage. (See page 8.)
Connect a capacitor to prevent
oscillation to the VREF pin.
(See page 7.)
Set the operating frequency
with the RT and CT pins.
(See page 8.)
Fig. 3 BD9740KN Application Circuit
For more information
about setting the SCP pin,
see page 7.
6/14
This pin is used as the
on/off control pin.
(See page 7.)
Connect a capacitor to prevent
oscillation to the VREGA pin.
(See page 7.)
Set whether CH1, CH2, and CH3 will be
used as step-up or step-down.
(See page 7.)
Apply the PVCCH pin voltage
with an external charge pump.
(See page 4.)
Technical Note
2010.09 - Rev.A