BD9673AEFJ Datasheet, PDF (2/23 Pages) Rohm – Flexible Step-down Switching Regulators with Built-in Power MOSFET

BD9673AEFJ
●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
Lx
GND
VC
FB
SYNC
EN
BST
VCC
Description
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
●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
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TSZ22111・15・001
Figure 3. Block Diagram
2/20
TSZ02201-0Q1Q0AJ00190-1-2
28.JAN.2014 Rev.003