BD9639MWV_16 Datasheet, PDF (13/26 Pages) Rohm – Switching Regulator ICs

BD9639MWV
(9) CH5
(a) Function
Synchronous rectification Buck DC/DC converter with integrated output stage power MOS.
Output voltage ranges from 1.50[V] to 1.80[V].
VOOUUTT5 5
R51
C53
FB5
R52
0.4[V]
SAW
PRE
DRIVER
VBAT5
SW5
PGND5
VBAT
C52
VOOUUTT55
L51
C51
(b) Recommended External Components
Parts
name
Value
Maker
Part number
R51
Refer to right
table
-
-
R52
Refer to right
table
-
-
C51
10[µF]
Taiyo Yuden JMK212BJ106KG
C52
1[µF]
Taiyo Yuden JMK105BJ105KV
C53
100[pF]
Taiyo Yuden UMK105CH101JV
L51
6.8[µH]
Taiyo Yuden NR3015T6R8M
(c) Start-up Sequence
OUT5
Set external
R51
R52
1.5[V]
1.8[V]
100[kΩ]
100[kΩ]
33[kΩ] + 3.3[kΩ] 27[kΩ] + 1.6[kΩ]
2.5[V] to5.5[V]
VBAT5
H input voltage
XSHDN 1
XSHDN24
XSHDN5 0[V]
OUT5
0[V]
H input voltage
1.50[V] to1.80[V]
Soft start period
2.00[ms]
Discharge
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TSZ22111・15・001
13/22
TSZ02201-0313AA400630-1-2
09.Feb.2016 Rev.001