Datasheet MIC4680 (Microchip) - 3

Micrel, Inc. MIC4680 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN)(3) .+38V
Shutdown Voltage (VSHDN). –0.3V to +38V
Steady-State Output Switch Voltage (VSW) .–1V
Feedback Voltage [Adjustable] (VFB) .+12V
Storage Temperature (Ts) .–65°C to +150°C
EDS Rating(5) Supply voltage (VIN)(4). +4V to +34V
Junction Temperature (TJ) . +125°C
Package Thermal Resistance(6)
SIOC (θJA).63°C/W Electrical Characteristics
VIN = 12V; ILOAD = 500mA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C, Note 7; unless noted.
Parameter Condition Min Typ Max Units (±1%)
(±1%) 1.217
1.205 1.230 1.243
1.255 V
V 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A, VOUT = 5V 1.193
1.180 1.230 1.267
1.280 V
V MIC4680 [Adjustable]
Feedback Voltage Maximum Duty Cycle VFB = 1.0V Output Leakage Current VIN = 34V, VSHDN = 5V, VSW = 0V 50 500 µA VIN = 34V, VSHDN = 5V, VSW = –1V 4 20 mA VFB = 1.5V 7 12 mA Quiescent Current 93 97 % MIC4680-3.3
Output Voltage (±1%)
(±3%) 3.266
3.201 3.3 3.333
3.399 V
V 6V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A 3.168
3.135 3.3 3.432
3.465 V
V 93 97 Maximum Duty Cycle VFB = 2.5V Output Leakage Current VIN = 34V, VSHDN = 5V, VSW = 0V 50 500 µA VIN = 34V, VSHDN = 5V, VSW = –1V 4 20 mA VFB = 4.0V 7 12 mA Quiescent Current % MIC4680-5.0
Output Voltage (±1%)
(±3%) 4.950
4.85 5.0 5.05
5.15 V
V 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A 4.800
4.750 5.0 5.200
5.250 V
V 93 97 Maximum Duty Cycle VFB = 4.0V Output Leakage Current VIN = 34V, VSHDN = 5V, VSW = 0V Quiescent Current % 50 500 µA VIN = 34V, VSHDN = 5V, VSW = –1V 4 20 mA VFB = 6.0V 7 12 mA MIC4680/-3.3/-5.0
Frequency Fold Back 30 50 100 kHz Oscillator Frequency 180 200 220 kHz 1.4 1.8 V 1.8 2.5 A Saturation Voltage IOUT = 1A Short Circuit
Current Limit VFB = 0V, see Test Circuit Standby Quiescent
Current VSHDN = VIN 1.5 VSHDN = 5V (regulator off) 30 March 2008 1.3 3 µA
100 µA M9999-032808