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BD9730KV-E1 [ROHM]

Switching Regulator/Controller, Voltage-mode, 0.03A, 700kHz Switching Freq-Max, BICMOS, PQFP48;
BD9730KV-E1
型号： BD9730KV-E1
厂家： ROHM    ROHM
描述：

Switching Regulator/Controller, Voltage-mode, 0.03A, 700kHz Switching Freq-Max, BICMOS, PQFP48

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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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