BD9634GU Datasheet, PDF (11/30 Pages) Rohm – Switching Regulator ICs

BD9634GU
【CH3】
・Function
Synchronous rectification type buck DC/DC converter with built in power MOS output stage.
Output voltage ranges from 1.05[V] to 1.8[V]（TYP）.
VOUT3
R1
C3
FB3
R2
0.4[V]
SAW
PRE
DRIVER
VBAT3
SW3
PGND13
VBAT
C2
VOUT3
L1
C1
・Recommended External
Parts name
Value
R1
Refer to the right table
R2
Refer to the right table
C1
10[μF]
C2
1[μF]
C3
10[pF]
L1
4.7[μH]
Maker
-
-
Taiyo Yuden
Taiyo Yuden
Taiyo Yuden
sumida
Part number
-
-
JMK212BJ106KG
JMK105BJ105KV
TMK063CH100DT
CDRH2D14NP-4R7NC
VOUT3
Setting
external
R1
R2
1.05[V]
270[KΩ]
160[KΩ]+6.2[KΩ]
1.26[V]
270[KΩ]
120[KΩ]+5.6[KΩ]
1.8[V]
270[KΩ]
75[KΩ]+2.2[KΩ]
VOUT3  ^{R1  R2}  0.4[V]
R2
・Start-up Sequence
VBAT3 2.5[V] to 5.5[V]
PWM/PFM H input voltage
XSHDN34 0[V]
VOUT3 0[V]
H input voltage
1.05[V] to 1.8[V]
Soft start period
1.0[ms]
Discharge
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TSZ22111・15・001
11/26
TSZ02201-0313AA400620-1-2
26.Apr.2016 Rev.001