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BD9757MWV 반도체 회로 부품 판매점

Switching Regulator IC



ROHM Semiconductor 로고
ROHM Semiconductor
BD9757MWV 데이터시트, 핀배열, 회로
Regulators ICs for Digital Cameras and Camcorders
Switching Regulator IC
with Built-in FET (5V)
BD9757MWV
No.10036EAT09
Description
BD9757MWV is an 8-channel switching regulator with a built-in FET for digital still camera. It has a built-in function to
light-control the white LED for backlight according to the light control setting signal from microcomputer.
Features
1) Starting from VBAT terminal of 1.5V
2) Power of internal circuit is supplied from voltage boost CH1
3) Mounted with a total of 8ch including voltage boost 2ch, voltage step-down 4ch, inversion 1ch, and white
LED-purpose voltage boost (compatible with DC light control) 1ch
4) Built-in 5-channel transistors for synchronous rectification
5) Built-in 2-channel FET transistors for voltage boost
6) Built-in all-channel phase compensation between input and output of error amplifier
7) Channel 1 and 3 are common, but other channels are independent, so the ON/OFF is possible
8) Operating frequencies of 1.2MHz (CH1 ~ 5), 600KHz(CH6 ~ 8)
9) Built-in output breaking circuit (timer latch type) at the time of overload
10) Built-in 2ch of high side switch with soft start function
11) UQFN044V6060 package (6mm×6mm ,0.4mm pitch) with heat dissipation
Applications
Digital still camera
Absolute maximum ratings (Ta=25)
Parameter
Symbol
Ratings
Power Supply Voltage
VBAT
-0.3 ~ 7
VHx1 ~ 5
-0.3 ~ 7
Power Input Voltage
HS78H
-0.3 ~ 7
VLx7,8
-0.3 ~ 22
IomaxLx1
±2.5
IomaxHx1
±1.5
Maximum output current
IomaxHx2,5
IomaxHx3,4
+1.0
+0.8
IomaxHS78
+1.2
Power Dissipation
IomaxLx7,8
Pd
±1.0
0.54(1)
Operating temperature range
Topr -25 ~ +85
Storage temperature range
Tstg -55 ~ +150
Junction temperature
Tjmax
+150
1 At the time of a single IC. If used in more than Ta=25, reduced by 4.32mW/.
Units
V
V
V
V
A
A
A
A
A
A
W
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/20
2010.11 - Rev.A


BD9757MWV 데이터시트, 핀배열, 회로
BD9757MWV
Operating conditions
Parameter
Symbol
Ratings
Min. Typ. Max.
Unit
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
CH8 modulated light
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
Driver
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
Output voltage setting range
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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BD9757MWV regulator

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Switching Regulator IC - ROHM Semiconductor