BD9876AEFJ Datasheet, PDF (2/24 Pages) Rohm – Flexible Step-down Switching Regulators with Built-in Power MOSFET

BD9876AEFJ
●Pin Configuration
8
7
6
5
Thermal Pad
Datasheet
1
2
3
4
Figure 2. Pin Configuration (TOP VIEW)
●Pin Description
Pin No.
1
2
3
4
5
6
7
8
-
Pin Name Description
Lx
Terminal for inductor
GND
Ground pin
VC
Error amplifier output
FB
Inverting node of the trans conductance error amplifier
SYNC Input pin of an external signal for the device synchronized by external signal
EN
Stand-by ON/OFF pin
BST
Voltage Supply pin for High Side FET Driver
VCC
Voltage input pin
Thermal Pad PAD for enhance the radiation of heat. Connect to GND absolutely.
●Block Diagram
ON/OF
E
TSD _UVLO
Reference
VREF
REG
Current
Sense AMP
Shutdown
F
Error
-
1.0V
+
+
Current
Comparator
-
Σ₊
RQ
S
Soft
Start
Oscillator
300kH
VC
BS
200mΩ
LX
10Ω
GN
VOU
T
V
SYN
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
Figure 3. Block Diagram
2/21
TSZ02201-0Q1Q0AJ00170-1-2
28.JAN.2014 Rev.003