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PDF BD9634GU Data sheet ( Hoja de datos )
| Número de pieza | BD9634GU | |
| Descripción | Switching Regulator ICs | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Switching Regulator ICs
with Built-in FET (5V)
BD9634GU
General Description
BD9634GU 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, 2ch LDO embedded
・CH1 Boost
－ Startup ch,Motor
・CH2 LDO
FET embedded
Analog
・CH3 Buck
FET embedded
Core
・CH4 Buck-Boost FET embedded
Digital
・CH5 Boost/Buck
－
CMOS, Memory
・CH6 Boost
－
LED
・CH7 Boost
FET embedded
CCD
・CH8 Reverse
－
CCD
・CH9 LDO
FET embedded
Analog
Low voltage operation 2.5[V]
CH1 supply voltage output for internal circuit
CH1 PWM / PFM selectable
CH4 Boost-Buck auto switching
CH5 Boost/Buck external 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
Output Current Limiter (CH2,CH9),
Short Circuit Protection Function (CH3 to CH8)
Error Amp Phase Compensation integrated
(CH1,CH3,CH4,CH6 to CH8)
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)
CH6 Load Switch
0.40Ω(Typ)
CH7 PMOS
4.00Ω(Typ)
CH7 NMOS
0.70Ω(Typ)
CH9 PMOS
0.90Ω(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
〇This product has no designed protection against radioactive rays.
1/26
TSZ02201-0313AA400620-1-2
26.Apr.2016 Rev.001
1 page  
BD9634GU
Electrical Characteristics
（Unless otherwise specified, VVBAT=VVBAT3,4,6,8=3.7[V], VOUT1 Input Voltage=3.7[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
・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 1.40 2.10 3.15 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
VVBAT
-0.3
-
-V
VIL1
-
-
GND
+0.3
XSHDN1
V
H Input Voltage2
L Input Voltage2
H Input Voltage3
L Input Voltage3
H Input Current1
H Input Current2
Oscillating Frequency 1
Oscillating Frequency 2
Reduced-voltage
Detection Voltage
Reduced-voltage
Return Voltage
【CH1】
Error Amp Reference
Voltage
Soft-start Period 85%
Maximum Duty
【CH2】
Reference Voltage
Startup period 85%
PMOS ON-Resistance
VIH3
VIL3
VIH3
VIL3
IIH1
IIH2
fOSC1
fOSC2
VUVLO1
VUVLO2
2.5
-
VOUT1
-0.3
-
4.63
18.5
0.8
400
1.60
1.80
-
-
-
-
9.25
37
1.0
500
1.80
2.00
-
GND
+0.3
-
GND
+0.3
18.5
74
1.2
600
2.00
2.20
V
Setting terminal except for XSHDN1, SEL5
V
V
V
µA
µA
MHz
KHz
V
SEL5
Input Voltage =3.7[V]
XSHDN2,XSHDN34,XSHDN5,XSHDN6,
XSHDN78,XSHDN9,PWM/PFM
Input Voltage =3.7[V] CTL4
RRT=10[kΩ]
RRT=10[kΩ]
V
VEREF1
tSS1
DMAX1
0.390 0.400 0.410
0.44 1.08 1.72
76.5 85.0 93.5
V PWM/PFM=H
ms
Soft-start period 100% 1.27[ms](TYP)
PWM/PFM=L
% PWM/PFM=H
VREF2
tSS2
RONP2
0.291
0.73
-
0.300
1.45
1.20
0.309
2.17
1.95
V
ms Startup Period 100% 1.7[ms]（TYP）
Ω Power Supply 3.7[V]
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/26
TSZ02201-0313AA400620-1-2
26.Apr.2016 Rev.001
5 Page 
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
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/26
TSZ02201-0313AA400620-1-2
26.Apr.2016 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD9634GU.PDF ] | |
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