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| BD9757MWV_10 Datasheet, PDF (2/24 Pages) Rohm – Switching Regulator IC | |||
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BD9757MWV
âOperating conditions
Parameter
Ratings
Symbol
Unit
Min.
Typ.
Max.
Power supply voltage
VBAT
1.5
-
5.5
V
VREF terminal connection capacity
CVREF 0.47
1.0
4.7
μF
VREGA terminal connection capacity CVREGA 0.47
1.0
4.7
μF
ãCH8 modulated lightã
H fixed time when the modulated
light control setting is determined
TON
265X
1/fosc1
-
-
sec
L fixed time when OFF
TOFF
256X
1/fosc1
-
-
sec
H fixed time at the time of
modulated light control setting
TH
500
-
10000 nsec
L fixed time at the time of
modulated light control setting
TL
500
-
10000 nsec
H fixed time at the time of EN starting up TEN
4X
1/fosc1
-
-
sec
L fixed time
before modulated light control setting
TCLR
7X
1/fosc1
-
255X
1/fosc1
sec
Time of light control setting
at the time of starting up
TSET
-
-
2048X
1/fosc1
sec
ãDriverã
CH1 PMOS drain current
Idpl1
-
-
1.2
A
CH1 NMOS drain current
Idnl1
-
-
2.3
A
CH2,5 PMOS drain current
Idpl2
-
-
0.8
A
CH2, 5 NMOS drain current
Idnl2
-
-
0.8
A
CH3, 4 PMOS drain current
Idpl22
-
-
0.6
A
CH3, 4 NMOS drain current
Idnl22
-
-
0.6
A
CH6 driver output peak current
Idpeak
-
-
±0.5
A
CH7, 8 high side switch input current
Idpl7,8
-
-
1.0
A
CH7, 8 NMOS drain current
ãOutput voltage setting rangeã
CH1
Idnl6
-
-
0.8
A
-
4.5
-
5.4
V
CH2
-
1.0
-
4.4
V
CH3
-
1.0
-
4.4
V
CH4
-
1.0
-
4.4
V
CH5
-
1.0
-
4.4
V
CH6
-
-8.0
-
-5.0
V
CH7
-
8.5
-
16
V
CH8
-
8.5
-
20
V
Technical Note
conditions
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/20
2010.11 - Rev.A
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