BD91361MUV_14 Datasheet, PDF (2/27 Pages) Rohm – Synchronous Buck Converter with Integrated FET

BD91361MUV
Pin Configuration
(TOP VIEW)
Datasheet
15 14 13 12 11
N.C. 16
EN ¹⁷
18
PGND 19
20
1 23 4 5
10 _VCC
9 BST
8
7 PVCC
6
Pin Description
Pin Pin
No. Name
1
SW
2
SW
3
SW
4
SW
5
SW
6 PVCC
7 PVCC
8 PVCC
9
BST
10 VCC
Figure 2. Pin Configuration
Function
Pin
No.
Power switch node
11
Power switch node
12
Power switch node
13
Power switch node
14
Power switch node
15
Power switch supply pin
16
Power switch supply pin
17
Power switch supply pin
18
Bootstrapped voltage input pin
19
Power supply input pin
20
Pin
Name
GND
ADJ
ITH
VID<1>
VID<0>
N.C.
EN
PGND
PGND
PGND
Function
Ground pin
Output voltage detection pin
GmAmp output pin/connected to
phase compensation capacitor
Output voltage control pin<1>
Output voltage control pin<0>
No connection
Enable pin (active high)
Power switch ground pin
Power switch ground pin
Power switch ground pin
Block Diagram
VCC
EN
VID<0>
VID<1>
VREF
SELECTOR
Gm Amp
+
Soft
Start
Current Comp
+
RQ
S
SLOPE
CLK
OSC
VCC
UVLO
TSD
SCP
Current
Sense/
Protect
+
Driver
Logic
PVCC
VVCCCC
BST
PVCC
Input
SW
Output
PGND
GND
ADJ
RR2₂
RR₁ 1
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ITH
RI_ITT_HH CCI_ITT_HH
Figure 3. Block Diagram
2/23
TSZ02201-0J3J0AJ00200-1-2
06.Oct.2014 Rev.002