MIC2571
Micrel
Absolute Maximum Ratings
Supply Voltage (V
IN
) ..................................................... 18V
Switch Voltage (V
SW
) .................................................... 36V
Switch Current (I
SW
) ....................................................... 1A
Sync Voltage (V
SYNC
) .................................... –0.3V to 15V
Storage Temperature (T
A
) ....................... –65°C to +150°C
MSOP Power Dissipation (P
D
) ................................ 250mW
Operating Ratings
Supply Voltage (V
IN
) .................................... +0.9V to +15V
Ambient Operating Temperature (T
A
) ........ –40°C to +85°C
Junction Temperature (T
J
) ....................... –40°C to +125°C
MSOP Thermal Resistance
(θ
JA
) .......................... 240°C/W
Electrical Characteristics
V
IN
= 1.5V; T
A
= 25°C,
bold
indicates –40°C
≤
T
A
≤
85°C; unless noted
Parameter
Input Voltage
Quiescent Current
Fixed Feedback Voltage
Condition
Startup guaranteed, I
SW
= 100mA
Output switch off
MIC2571-1; V
2.85V pin
= V
OUT
, I
SW
= 100mA
MIC2571-1; V
3.3V pin
= V
OUT
, I
SW
= 100mA
MIC2571-1; V
5V pin
= V
OUT
, I
SW
= 100mA
MIC2571-2, [adj. voltage versions], I
SW
= 100mA,
Note 1
MIC2571-2, [adj. voltage versions]
MIC2571-1; V
2.85V pin
= V
OUT
, I
SW
= 100mA
MIC2571-1; V
3.3V pin
= V
OUT
, I
SW
= 100mA
MIC2571-1; V
5V pin
= V
OUT
, I
SW
= 100mA
MIC2571-1; V
2.85V pin
= V
OUT
MIC2571-1; V
3.3V pin
= V
OUT
MIC2571-1; V
5V pin
= V
OUT
MIC2571-2, [adj. voltage versions]; V
FB
= 0V
1.0V
≤
V
IN
≤
12V
V
IN
= 1.0V, I
SW
= 200mA
V
IN
= 1.2V, I
SW
= 600mA
V
IN
= 1.5V, I
SW
= 800mA
Output switch off, V
SW
= 36V
MIC2571-1, -2; I
SW
= 100mA
2.7
3.14
4.75
208
Min
0.9
120
2.85
3.30
5.00
220
6
65
75
120
4.5
4.5
4.5
25
0.35
200
400
500
1
20
36
0.7
35
1.1
V
FB
< V
REF
, I
SW
= 100mA
67
3.0
3.47
5.25
232
Typ
Max
15
Units
V
V
µA
V
V
V
mV
mV
mV
mV
mV
µA
µA
µA
nA
%/V
mV
mV
mV
µA
kHz
V
V
µs
A
%
Reference Voltage
Comparator Hysteresis
Output Hysteresis
Feedback Current
Reference Line Regulation
Switch Saturation Voltage
Switch Leakage Current
Oscillator Frequency
Maximum Output Voltage
Sync Threshold Voltage
Switch On Time
Currrent Limit
Duty Cycle
Note 1:
General Note:
Devices are ESD protected; however, handling precautions are recommended.
Measured using comparator trip point.
1997
3
MIC2571
MIC [ MIC GROUP RECTIFIERS ]
