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PDF BD9631GU Data sheet ( Hoja de datos )
| Número de pieza | BD9631GU | |
| Descripción | Switching Regulator ICs | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Switching Regulator ICs
with Built in FET (5V)
BD9631GU
General Description
BD9631GU is a system switching regulator IC for
DSC/DVC applications to generate plural voltage high
efficiently from battery. Component for Power FET and
phase compensation are embedded so it is suitable for
compact type DSC/DVC application.
Features
7ch DC/DC converter, 1ch LDO embedded
・CH1 Boost － Startup ch,Motor
・CH2 LDO
FET embedded Analog
・CH3 Buck
FET embedded Core
・CH4 Buck-Boost FET embedded Digital
・CH5 Buck
FET embedded Memory
・CH6 Boost
－
LED
・CH7 Boost
FET embedded CCD
・CH8 Reverse
－
CCD
Low voltage operation 2.5[V]
CH1 supply voltage output for internal circuit
CH1 PWM / PFM selectable
CH3 High speed response by current control
CH4 Boost-Buck auto switching
CH6,CH7 integrated Boost output shutdown
・CH7: Back Gate Control Function
・CH6: Load Switch integrated
Soft-start correspondence to each channel ch
・CH3→CH4 Sequence Control integrated
・CH7→CH8 2-types Sequence Control integrated
Output Current Limiter (CH2,CH3),
Short Circuit Protection Function(CH4 to CH8)
integrated
Error Amp Phase Compensation integrated
Operating Frequency
1[MHz](CH1,CH3 to CH5), 500[KHz](CH6 to CH8)
Key Specifications
VBAT Supply Voltage:
2.5V to 5.5V
Oscillating Frequency 1:
1.0 MHz(Typ)
Oscillating Frequency 2:
500kHz(Typ)
ON-Resistance:
CH2 PMOS
1.2Ω(Typ)
CH3 PMOS
0.45Ω(Typ)
CH3 NMOS
0.30Ω(Typ)
CH4 PMOS DOWN,UP side
0.45Ω(Typ)
CH4 NMOS DOWN,UP side
0.30Ω(Typ)
CH5 PMOS,NMOS
0.35Ω(Typ)
CH6 Load Switch
0.40Ω(Typ)
CH7 PMOS
4.00Ω(Typ)
CH7 NMOS
0.70Ω(Typ)
Operating Temperature Range
-20°C to +85°C
Package
VCSP85H4
W (Typ) x D (Typ) x H (Max)
4.26mm x 4.26mm x 1.00mm
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/25
TSZ02201-0313AA400610-1-2
26.Apr.2016 Rev.001
1 page  
BD9631GU
Electrical Characteristics
（Unless otherwise specified , VVBAT=VVBAT3,4,5,6,8=3.7[V], VOUT1 input terminal =4.2[V], Ta=25[°C]）
Parameter
Limit
Symbol
Unit
MIN TYP MAX
Conditions
Current Consumption
(PFM)
Current Consumption
(PWM)
Shutdown Current
Consumption
H Input Voltage1
L Input Voltage1
H Input Voltage2
L Input Voltage2
H Input Voltage3
L Input Voltage3
H Input Current1
・XSHDN1=H, PWM/PFM=L,
Other setting terminal=L
ICC1 - 90 180 µA ・Without load on each channel
・sum of VBAT terminal,
and VOUT1 terminal
・XSHDN1=H, PWM/PFM=H,
Other setting terminal =L
ICC2 1.00 1.50 2.25 mA ・Without load on each channel
・sum of VBAT terminal,
and VOUT1 terminal
・All setting terminal =L
ICC3
-
0
10
µA
・Without load on each channel
・sum of VBAT terminal,
and VOUT1 terminal
VIH1
VIL1
VVBAT
-0.3
-
-
-
-
GND
+0.3
V
XSHDN1
V
VIH2
VIL2
VVREF
-0.3
-
-
-
VVREF
+0.3
GND
+0.3
V
CTL34
V
VIH3 2.5 -
-V
VIL3
-
-
GND
+0.3
Setting terminal except for XSHDN1,CTL34
V
Input Voltage=3.7[V]
IIH1 4.63 9.25 18.5 µA XSHDN2,XSHDN34,XSHDN5,XSHDN6,
XSHDN78,PWM/PFM
H Input Current2
IIH2 12.5 25 50 µA Input Voltage=VREF CTL34
L Input Current2
IIL2 12.5 25
Oscillating Frequency 1
fOSC1
0.8 1.0
Oscillating Frequency 2
fOSC2
400 500
Reduced-voltage
Detection Voltage
VUVLO1
1.60 1.80
Reduced-voltage
Return Voltage
VUVLO2
1.80 2.00
【Internal Power Supply, CH8 Reference Voltage】
Output Voltage
VVREF
2.44 2.50
Output Current
【CH1】
Error Amp Reference
Voltage
IVREF
-
-
VEREF1
0.39 0.40
Soft-start Period 85%
tSS1 0.44 1.08
Maximum Duty
DMAX1 76.5 85.0
50
1.2
600
2.00
2.20
µA
MHz
KHz
V
Input Voltage=0[V] CTL34
RRT=100[kΩ]
RRT=100[kΩ]
V
2.56 V Load Current 10[mA]
10 mA
0.41 V PWM/PFM=H
1.72
ms
Soft-start period 100% 1.27[ms](TYP)
PWM/PFM=L
93.5 % PWM/PFM=H
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/25
TSZ02201-0313AA400610-1-2
26.Apr.2016 Rev.001
5 Page 
BD9631GU
【CH3】
・Function
Synchronous rectification type current control buck DC/DC converter with built in power MOS output stage.
Output voltage is selectable: 1.05[V]/1.26[V]/1.8[V]（TYP）.
VOUT3
Place a resistance to
change setting
voltage by external
0 to VREF
FB3
CTL34
0.4[V]
SLOPE
RAMP
VBAT3
PRE
DRIVER
SW3
PGND3
CURRENT SENSE
LIMIT
VBAT
C2
VOUT3
L1 C1
・Recommended External
Parts name
Value
C1 10[μF]
C2 10[μF]
L1 10[μH]
Maker
Taiyo Yuden
Taiyo Yuden
sumida
Part number
JMK212BJ106KG
JMK212BJ106KG
CDRH2D14NP-100NC
・Start-up Sequence
VBAT3
0[V]
VREF
0[V]
XSHDN34
0[V]
VOUT3 0[V]
2.5[V] to 5.5[V]
2.5[V]
H input voltage
1.05[V]/1.26[V]/1.8[V]
Discharge
Soft start period
1.0[ms]
・Over Current Protection
Monitor in-rush current to PMOS of PowerMOS and if over current (about 0.8[A] (TYP)) is detected, it stops switching for
about 2.0[μs] (TYP). Timer latch circuit will latch PMOS to OFF status if such condition remained for 1.0[ms].
Latch will be released either setting XSHDN1=GND, PWM/PFM=GND or restarting the device.
・Setting Voltage
It is possible to return in a set voltage by adding external resistance between VOUT3 and FB3.
CTL34=L
VOUT3 1.050[V] (0.01452 externalR[kΩ]0.4)[V]
CTL34=OPEN
VOUT3 1.259[V] (0.01821 externalR[kΩ]0.4)[V]
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/25
TSZ02201-0313AA400610-1-2
26.Apr.2016 Rev.001
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet BD9631GU.PDF ] | |
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