BD9673EFJ-E2 ROHM Electronics, BD9673EFJ-E2 Datasheet - Page 3

• Manufacturer Part Number: BD9673EFJ-E2
• Description: Specifications: Type: Step-Down (Buck) ; Output Type: Adjustable ; PWM Type: Current Mode ; Synchronous Rectifier: Yes ; Number of Outputs: 1 ; Voltage - Output: 1 V ~ 29.4 V ; Current - Output: 1.5A ; Frequency - Switching: 300kHz ; Voltage - Input:
• Manufacturer: ROHM Electronics

●Pin Description
●Block Diagram
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BD9673EFJ
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8
1
Fig.1 Pin Layout Diagram
FB
Thermal Pad
7
2
1.0V
ON/OFF
Start
Soft
EN
-
+
+
6
3
TSD
Error
AMP
shutdown
VC
5
4
UVLO
Oscillator
Σ
300kHz
-
+
Reference
VREF
Comparator
SYNC
Current
R
S
No.
Pin
1
2
3
4
5
6
7
8
Fig.2 Block Diagram
Current Sense
Q
SYNC
Name
GND
VCC
BST
Pin
VC
EN
FB
Lx
REG
AMP
3/18
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
2012.02 - Rev.C
VOUT