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BD8303MUV-E2 Datasheet(PDF) 2 Page - Rohm

Part # BD8303MUV-E2
Description  Step-up/down, High-efficiency Switching Regulators (Controller type)
Download  18 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD8303MUV-E2 Datasheet(HTML) 2 Page - Rohm

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Technical Note
2/15
BD8303MUV
www.rohm.com
2013.07 - Rev.B
○
c
2009 ROHM Co., Ltd. All rights reserved.
● Electrical Characteristics
(Unless otherwise specified, Ta = 25 °C, VCC = 7.4 V)
Parameter
Symbol
Target Value
Unit
Conditions
Minimum
Typical
Maximum
[Low voltage input malfunction preventing circuit]
Detection threshold voltage
VUV
-
2.4
2.6
V
VREG monitor
Hysteresis range
ΔVUVhy
50
100
200
mV
[Oscillator]
Oscillation frequency
fosc
480
600
720
kHz
RT=51k
Ω
[Regulator]
Output voltage
VREG
4.7
5.1
5.5
V
[Error AMP]
INV threshold voltage
VINV
0.9875
1.00
1.0125
V
Input bias current
IINV
-50
0
50
nA
Vcc=12.0V ,
IINV=6.0V
Soft-start time
Tss
2.4
4.0
5.6
msec
RT=51k
Ω
Output source current
IEO
10
20
30
μA
VINV=0.8V , VFB =1.5V
Output sink current
IEI
0.6
1.3
3
mA
VINV=1.2V , VFB =1.5V
[PWM comparator]
SW1 Max Duty
Dmax1
85
90
95
%
HG1 ON
SW2 Max Duty
Dmax2
85
90
95
%
LG2 ON
SW2 Min Duty
Dmin2
5
10
15
%
LG2 OFF
[Output]
HG1, 2 High side ON resistance
RONHp
-
4
8
Ω
HG1, 2 Low side ON resistance
RONHn
-
4
8
Ω
LG1, 2 High side ON resistance
RONLp
-
4
8
Ω
LG1, 2 Low side ON resistance
RONLn
-
4
8
Ω
HG1-LG1 dead time
Tdead1
50
100
200
nsec
HG2-LG2 dead time
Tdead2
50
100
200
nsec
[STB]
STB pin
control voltage
Operation
VSTBH
2.5
-
VCC
V
No-operation
VSTBL
-0.3
-
0.3
V
STB pin pull-down resistance
RSTB
250
400
700
k
Ω
[Circuit current]
Standby
current
VCC pin
ISTB
-
-
1
μA
Circuit current at operation
VCC
Icc1
-
650
1000
μA
VINV=1.2V
Circuit current at operation
BOOT1,2
Icc2
-
120
240
μA
VINV=1.2V


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