Table of Contents
Advertisement
MB39A105
ELECTRICAL CHARACTERISTICS
Parameter
1. Under voltage
lockout
Threshold voltage
protection circuit
block [UVLO]
Threshold voltage
Short-circuit detection time
setting difference voltage
Input source current
2. Short-circuit
protection block
Reset voltage
[SCP]
SCPOD terminal output
leak current
SCPOD terminal output on
resistor
Oscillation frequency
3. Triangular
wave oscillator
Frequency temperature
block
[OSC]
variation
4. Soft-start block
Charge current
[CS]
Threshold voltage
Input bias current
Voltage gain
Frequency band width
5. Error amplifier
block [Error Amp]
Output voltage
Output source current
Output sink current
6. PWM compar-
ator block
Maximum duty cycle
[PWM Comp.]
Output source current
7.Output block
Output sink current
[Drive]
Output ON resistor
Standby current
8. General block
Power supply current
*: Standard design value.
6
Pin
Conditions
Symbol
No
V
3
VCC
TLH
V
2
TH
V
2
CSCP
I
2
CSCP
0.85 V
CSCP
V
3
VCC
RST
I
4
SCPOD
3.3 V
LEAK
R
4
SCPOD
1 mA
ON
fosc
5
RT
7.5 k
f
/
OSC
5
Ta
0 C to 85 C
f
OSC
I
2
CSCP
0 V
CS
V
1
FB
0.5 V
TH
I
1
INE
0 V
B
A
8
DC
V
BW
8
A
0 dB
V
V
8
OH
V
8
OL
I
8
FB
0.5 V
SOURCE
I
8
FB
0.5 V
SINK
Dtr
5
RT
7.5 k
OUT
0 V,
I
5
Duty
5
SOURCE
(t
1/fosc Duty)
OUT
3.3 V,
I
5
Duty
5
SINK
(t
1/fosc Duty)
R
5
OUT
15 mA
OH
R
5
OUT
15 mA
OL
I
3
RT
OPEN
CCS
I
3
RT
7.5 k
CC
(VCC
3.3 V, Ta
25 C)
Value
Unit
Min
Typ
Max
1.15
1.35
1.55
V
0.95
1.00
1.05
V
0.15
0.20
0.25
V
1.76
0.88
0.44
A
1.1
1.3
1.5
V
0
1.0
A
50
100
450
500
550
kHz
1*
16
11
6
A
0.495
0.5
0.505
V
120
30
nA
70*
dB
1.1*
MHz
1.17
1.27
1.37
V
40
200
mV
80
50
A
100
300
A
85
90
95
400*
mA
400*
mA
4.0*
3.0
6.0
0
10
A
1.2
1.8
mA
Advertisement
Table of Contents
