BD9730KV-E2 [ROHM]
Switching Regulator/Controller, Voltage-mode, 0.03A, 700kHz Switching Freq-Max, BICMOS, PQFP48;![BD9730KV-E2](http://pdffile.icpdf.com/pdf2/p00294/img/icpdf/BD9730KV-E1_1782820_icpdf.jpg)
型号: | BD9730KV-E2 |
厂家: | ![]() |
描述: | Switching Regulator/Controller, Voltage-mode, 0.03A, 700kHz Switching Freq-Max, BICMOS, PQFP48 信息通信管理 |
文件: | 总2页 (文件大小:86K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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5-channel Switching Regulator Controller
BD9730KV
Description
Dimension (Unit : mm)
The BD9730KV is a 5-channel switching regulator
controller IC designed for digital still cameras.
This IC can be operated at 2.5V. (Min.).
The 5-channel (4 channel for step-down and 1 channel
for step-up)switching regulator controllers are
integrated into a VQFP48 package. This IC can
operate both external Bipolar and FET transistors.
A triangle wave oscillator, a reference voltage, PWM
comparator, a CMOS type driver, and a short protection
circuit are all integrated in this single IC.
9.0±0.3
7.0 0.2
±
36 25
37
48
24
13
1
12
0. 15±0. 1
0.5
0.2
±
0. 1
0. 10
Features
VQFP48
1) Operates at a supply voltage of 2.5V (Min.)
2) High-precision reference voltage of 1.0V±1.2%
3) Can operate both external transistors of FET and Bipolar
(Base current can be set by resistance.)
4) All channels have dead time control
5) Built-in output shutdown circuit (timer latch) when overloaded
6) Channels 1 and 5 can externally set the reference voltage
7) Channels 1, 4 and 5 can control independently the ON/OFF
Applications
Digital still camera, portable DVD player, digital movie camera, PDA, W-CDMA
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Vmax
Limits
Unit
V
+
Maximum applied voltage
0.3
12
~
∗1
∗2
400
900
mW
Power dissipation
Pd
+
+
Operating temperature range
Storage temperature range
∗1 When only IC is used. Derating : 4.0mW/˚C for operation above Ta=25˚C
∗2 PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
Derating : 9.0mW/˚C for operation above Ta=25˚C
20
55
85
Topr
Tstg
~
~
˚C
˚C
125
Recommended Operating Conditions (Ta=25˚C)
Parameter
Symbol
Min.
2.5
100
—
Typ.
Max.
11
Unit
V
∗3
Supply voltage
—
VCC
—
fosc
Oscillating frequency
Output current
700
30
kHz
mA
IOUT
—
∗3 REG output voltage is derated when Vcc is less than 2.6V~2.5V.
Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=6V, fosc=0.20MHz, STB1~5=3V)
Parameter
Symbol
Min.
Typ.
4.8
1.0
Max.
Unit
Conditions
Circuit current at standby
Circuit current at operating
(Reference voltage)
Output voltage
Ist
10
µA
mA
STB1~5=0V
Icc
9.5
Vref
0.988
1.012
V
Iref= 1mA
(Internal regulator)
Output voltage REGA
(Shutdown at overload)
CH1~5 threshold voltage
VREGA
Vsc1~5
Vtsc
2.4
0.90
0.90
0.179
2.5
1.0
2.6
1.10
1.10
0.221
V
V
Ireg= 1mA
VSCP1~5=1.5V~0.5V
VSCP=0V~1.5V
RT=24kΩ, CT=220pF
(Protection circuit)
SCP pin detection voltage
Triangular oscillator)
Oscillating frequency
(Output)
1.0
V
fosc1
0.200
MHz
VSATH Vcc 0.4 Vcc 0.2
V
V
Io=10mA
Output voltage "H" at operating
Output voltage "L" at operating
VSATL
IOSOURCE
Iosink
0.2
0.4
30
Io= 10mA
Maximum output source current
Maximum output sink current
(STB1~5)
mA
mA
30
Operating
VSTBL
VSTBH
2.0
V
V
STB pin
control voltage
Non-operating
0.3
0.3
Application Circuit
VREGA
VCC
4.7µF
30
32
33
29
SCP
GND
VCC
VREGA
REG A
U.V.L.O
VREF
34
VOLTAGE
REFERENCE
To-Divers
VREF
VREGA
To Control
Block
TIMER LATCH
S
10µF
R
Q
VCC
DTC1
43
PVCC1
OUT1
3
VCC
FB1
40
INV1
41
INV1
VREGA
NON1
ERRAMP1
2
1
VREF
SCP1
42
Pch DRIVER
Pch DRIVER
VCC
SCP1
39
PWM
COMP.1
SCPcomp1
DTC2
SCP1
INV1
38
RBIAS1
FB2
36
INV2
OUT2
INV2
VREGA
35
ERRAMP2
4
5
RBIAS2
PWM
COMP.2
SCP2
37
SCP2
SCP2
SCPcomp2
44
8
VCC
PGND1
DTC3
26
VCC
INV2
PVCC2
24
FB3
INV3
23
VREGA
ERRAMP3
7
6
INV3
Pch DRIVER
Pch DRIVER
OUT3
SCP3
25
VCC
PWM
SCP3
SCP4
COMP.3
SCPcomp3
RBIAS3
SCP3
DTC4
19
FB4
21
INV4
22
INV3
INV4
ERRAMP4
9
OUT4
PWM
COMP.4
VREGA
SCP4
20
10
RBIAS4
SCP4
INV4
SCPcomp4
VCC
DTC5
14
FB5
RBIAS5
OUT5
16
VCC
13
12
INV5
17
NON5
INV5
ERRAMP5
Nch DRIVER
VREF
SCP5
18
SCP5
INV5
SCP5
15
PWM
COMP.5
SCPcomp5
11
TRIANGLE
FORM
OSC
PGND2
ON/OFF
LOGIC
OSC
BUFFER
BD9730KV
45
27
28
48 47 46
RT
CT
STB1
STB23 STB4 STB5
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