BD9740KN-E2 Rohm Semiconductor, BD9740KN-E2 Datasheet - Page 5

• 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 (BD9739KN)
BD9739KN,BD9740KN
© 2010 ROHM Co., Ltd. All rights reserved.
Connect a
capacitor for setting
the soft start time.
(See pages 8& 9.)
Connect a
capacitor for soft
start at DTC pin.
(See page 8.)
Connect a resistor for
setting the output voltage.
(See page 8.)
www.rohm.com
The soft start times for CH4,
6, 7 are fixed internally.
(See page 9.)
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.)
For more information
about setting the SCP pin,
(See page 7.)
Fig. 2 BD9739KN Application Circuit
This pin is used as the
on/off control pin.
(See page 7.)
5/14
Connect a capacitor to prevent
oscillation to the VREGA pin.
(See page 7.)
Set whether CH1 and CH5
will be used as step-up,
step-down or inversion.
(See page 7.)
Apply the PVCCH pin voltage
with an external charge
pump. (See page 4.)
Technical Note
2010.09 - Rev.A