bd9876efj ROHM Co. Ltd., bd9876efj Datasheet - Page 3

• Manufacturer Part Number: bd9876efj
• Description: Flexible Step-down Switching Regulator With Built-in Power Mosfet
• Manufacturer: ROHM Co. Ltd.

●Pin Description
●Block Diagram
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BD9876EFJ
© 2011 ROHM Co., Ltd. All rights reserved.
8
1
FB
Fig.1 Pin Layout Diagram
Thermal Pad
1.0V
ON/OFF
7
2
Start
Soft
EN
-
+
+
6
3
TSD
Error AMP
Shutdown
VC
UVLO
5
4
Oscillator
Σ
300kHz
-
+
Reference
Comparator
Current
VREF
SYNC
R
S
No.
Pin
Fig.2 Block Diagram
1
2
3
4
5
6
7
8
Q
SYNC
Name
GND
VCC
BST
Pin
VC
EN
FB
Current
Sense
AMP
REG
Lx
3/16
Terminal for inductor
Ground pin
Error amplifier output
Inverting node of the trans conductance error amplifier
Input pin of an external signal for the device
synchronized by external signal
Stand-by ON/OFF pin
Voltage Supply pin for High Side FET Driver
Voltage input pin
200mΩ
10Ω
Function
VCC
GND
BST
LX
Technical Note
2011.07 - Rev.B
VOUT