MIC2570(1997) データシートの表示（PDF） - Micrel
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MIC2570 Datasheet PDF : 14 Pages
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MIC2570
Absolute Maximum Ratings
Supply Voltage (VIN) ..................................................... 18V
Switch Voltage (VSW) .................................................... 36V
Switch Current (ISW) ....................................................... 1A
Sync Voltage (VSYNC) .................................... –0.3V to 15V
Storage Temperature (TA) ....................... –65°C to +150°C
SOIC Power Dissipation (PD) .................................. 400mW
Micrel
Operating Ratings
Supply Voltage (VIN) .................................... +1.3V to +15V
Ambient Operating Temperature (TA) ........ –40°C to +85°C
Junction Temperature (TJ) ....................... –40°C to +125°C
SOIC Thermal Resistance (θJA) ............................ 140°C/W
Electrical Characteristics
VIN = 2.5V; TA = 25°C, bold indicates –40°C ≤ TA ≤ 85°C; unless noted
Parameter
Condition
Input Voltage
Quiescent Current
Startup guaranteed, ISW = 100mA
Output switch off
Fixed Feedback Voltage
Reference Voltage
MIC2570-1; V2.85V pin = VOUT, ISW = 100mA
MIC2570-1; V3.3V pin = VOUT, ISW = 100mA
MIC2570-1; V5V pin = VOUT, ISW = 100mA
MIC2570-2, [adj. voltage versions], ISW = 100mA, Note 1
Comparator Hysteresis
MIC2570-2, [adj. voltage versions]
Output Hysteresis
Feedback Current
Reference Line Regulation
Switch Saturation Voltage
Switch Leakage Current
Oscillator Frequency
Maximum Output Voltage
MIC2570-1; V2.85V pin = VOUT, ISW = 100mA
MIC2570-1; V3.3V pin = VOUT, ISW = 100mA
MIC2570-1; V5V pin = VOUT, ISW = 100mA
MIC2570-1; V2.85V pin = VOUT
MIC2570-1; V3.3V pin = VOUT
MIC2570-1; V5V pin = VOUT
MIC2570-2 [adj. voltage versions]; VFB = 0V
1.5V ≤ VIN ≤ 15V
VIN = 1.3V, ISW = 300mA
VIN = 1.5V, ISW = 800mA
VIN = 3.0V, ISW = 800mA
Output switch off, VSW = 36V
MIC2570-1, -2; ISW = 100mA
Sync Threshold Voltage
Switch On-Time
Currrent Limit
Duty Cycle
VFB < VREF, ISW = 100mA
General Note: Devices are ESD protected; however, handling precautions are recommended.
Note 1: Measured using comparator trip point.
Min Typ Max Units
1.3
15
V
130
µA
2.85
V
3.30
V
5.00
V
220
mV
220
mV
6
mV
65
mV
75
mV
120
mV
6
µA
6
µA
6
µA
25
nA
0.35
%/V
250
mV
450
mV
450
mV
1
µA
20
kHz
36
V
0.7
V
35
µs
1.1
A
67
%
4-64
1997
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