MPQ8612
―
12A/16A/20A, 6V, SYNCHRONOUS STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
V
IN
= 5V, T
J
= -40 to +125°C, unless otherwise noted.
Parameters
Supply Current
Supply Current (Shutdown)
Symbol
I
IN
Condition
V
EN
=
0V
V
EN
=
2V, V
FB
= 1V,
MPQ8612-12
V
EN
=
2V, V
FB
= 1V,
MPQ8612-16,
MPQ8612-20
MPQ8612-12, T
J
=25°C
High-side Switch On Resistance
HS
RDS-ON
MPQ8612-16, T
J
=25°C
MPQ8612-20, T
J
=25°C
MPQ8612-12, T
J
=25°C
Low-side Switch On Resistance
LS
RDS-ON
MPQ8612-16, T
J
=25°C
MPQ8612-20, T
J
=25°C
Switch Leakage
Current Limit
MPQ8612-12
High-side Current Limit
I
LIMIT
MPQ8612-16
MPQ8612-20
Timer
R
FREQ
=82kΩ,V
OUT
=1.2V,
MPQ8612-12
R
FREQ
=82kΩ,V
OUT
=1.2V,
MPQ8612-16,
MPQ8612-20
MPQ8612-12
MPQ8612-16,
MPQ8612-20
OCP Happens
170
200
30
30
75
110
2.5
110
120
1
50
130
150
160
ns
ns
ns
ns
μs
%V
REF
μs
%V
REF
17
23
29
21
28
35
26
33
41
A
SW
LKG
V
EN
= 0V, V
SW
= 0V or 5V,
T
J
=25°C
Min
Typ
0.001
850
600
1100
1000
Max
2
1300
1300
Units
μA
μA
μA
Supply Current (Quiescent)
I
IN
MOSFET
10
7.4
6.6
7.8
5.5
4.6
0.001
18
13
12
10
11
9.5
5
μA
mΩ
mΩ
One-Shot On Time
t
ON
Minimum Off Time
t
OFF
Fold back Timer
(5)
t
FOLDBACK
Over-voltage and Under-voltage Protection
OVP Threshold
V
OVP1
(5)
OVP Delay
t
OVP
(5)
UVP Threshold
V
UVP
MPQ8612 Rev. 1.11
www.MonolithicPower.com
10/22/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
4
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