BD9012KV Datasheet, PDF (2/17 Pages) Rohm – Dual-output, high voltage, high-efficiency step-down switching controller

●Operating conditions (Ta=25℃)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Input voltage 1
EXTVCC
4.5 ^{*1 *2}
12
30
V
Input voltage 2
VCC
4.5 ^{*1 *2}
12
30
V
BOOT－SW voltage
BOOT－SW
4.5
5
VREG5
V
Carrier frequency
OSC
250
300
1200
kHz
Synchronous frequency
SYNC
OSC
-
1200^*3*4
kHz
Synchronous pulse duty
Duty
40
50
60
％
Min OFF pulse
TMIN
-
150
-
nsec
★This product is not designed to provide resistance against radiation.
*1 After more than 4.5V, voltage range.
*2 In case of using less than 6V, Short to VCC, EXTVCC and VREG5.
*3 Please do not exceed OSC×1.5.
*4 Do not do such things as switching over to internal oscillating frequency while external synchronization frequency is used.
●Electrical characteristics (Unless otherwise specified, Ta=25℃ VCC=12V STB=5V EN1,2=5V)
Parameter
Symbol
Limit
Unit
Min.
Typ.
Max.
VIN bias current
IIN
-
6
10
mA
Shutdown mode current
IST
-
0
10
μA
ï¼»Error Amp Blockï¼½
Feedback reference voltage
Feedback reference voltage
(Ta=-40 to 105℃)
Open circuit voltage gain
VOB
VOB+
Averr
0.792 0.800 0.808
V
0.784 0.800 0.816
V
-
46
-
dB
VO input bias current
IVo+
-
-
1
μA
ï¼»Oscillatorï¼½
Carrier frequency
FOSC
900
1000
1100
kHz
Synchronous frequency
Fsync
-
1200
-
kHz
ï¼»Over Current Protection Blockï¼½
CL threshold voltage
CL threshold voltage
（Ta=-40 to 105℃）
ï¼»VREG Blockï¼½
Vswth
Vswth+
70
90
110
ｍV
67
90
113
ｍV
VREG5 output voltage
VREG5
4.8
5
5.2
V
VREG33 reference voltage
VREG33
3.0
3.3
3.6
V
VREG5 threshold voltage
VREG_UVLO
2.6
2.8
3.0
V
VREG5 hysteresis voltage DVREG_UVLO 50
100
200
mV
ï¼»Soft start blockï¼½
Charge current
ISS
6.5
10
13.5
μA
Charge current
(Ta=-40 to 105℃)
ISS+
6
10
14
μA
Note: Not all shipped products are subject to outgoing inspection.
Conditions
VSTB=0V
Ta=-40 to 105℃ ※
RT=27 kΩ
RT=27 kΩ,SYNC=1200kHz
Ta=-40 to 105℃ ※
IREF=6mA
IREG=6mA
VREG:Sweep down
VREG:Sweep up
VSS=1V
VSS=1V,Ta=-40 to 105℃ ※
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