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MIC22601 Datasheet, PDF (3/18 Pages) Micrel Semiconductor – 4 MHz, 6A Integrated Switch Synchronous Buck Regulator
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Micrel, Inc.
MIC22601
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .........................................................6V
Output Switch Voltage (VSW) ............................................6V
Output Switch Current (ISW).......................Internally Limited
Logic Input Voltage (VEN, VLQ)........................... VIN to –0.3V
Storage Temperature (Ts) .........................–65°C to +150°C
Lead Temperature (soldering 10sec.)........................ 260°C
EDS Rating(3)................................................................ +2kV
Operating Ratings(2)
Supply Voltage (VIN)......................................... 2.6V to 5.5V
Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C
Thermal Resistance
4mm x 4mm MLF-24 (θJC) ................................. 14ºC/W
4mm x 4mm MLF-24 (θJA) .................................40°C/W
Electrical Characteristics(4)
TA = 25°C with VIN = VEN = 3.3V; VOUT = 1.8V, unless otherwise specified. Bold values indicate –40°C≤ TJ ≤ +125°C.
Parameter
Condition
Min Typ Max Units
Supply Voltage Range
2.6
5.5
V
Under-Voltage Lockout Threshold (turn-on)
2.4
2.5
2.6
V
UVLO Hysteresis
280
mV
Quiescent Current, PWM Mode
Shutdown Current
[Adjustable] Feedback Voltage
VEN =>1.34V; VFB = 0.9V (not switching)
VEN = 0V
± 2% (over temperature)
850 1300
µA
5
10
µA
0.686
0.714
V
FB Pin Input Current
1
nA
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
Switch ON-Resistance PFET
Switch ON-Resistance NFET
Oscillator Frequency 22601
VFB = 0.9*VNOM
VOUT 1.8V; VIN = 2.6 to 5.5V, ILOAD= 100mA
100mA < ILOAD < 6000mA, Vin = 3.3V
VFB ≤ 0.5V
ISW = 1000mA; VFB=0.5V
ISW = -1000mA; VFB=0.9V
6
10
14
0.2
0.2
100
0.03
0.025
3.2
4
4.8
A
%
%
%
Ω
Ω
MHz
EN/DLY Threshold Voltage
1.14 1.24 1.34
V
EN/DLY Source Current
RC Pin IRAMP
Power On Reset IPG(LEAK)
VIN = 2.6 to VIN = 5.5V
Ramp Control Current
VPORH = 5.5V; POR = High
0.7
1
1.3
µA
0.7
1
1.3
µA
1
µA
2
µA
Power On Reset VPG(LO)
Power On Reset VPG
Output Logic-Low Voltage (undervoltage condition),
IPOR = 5mA
Threshold, % of VOUT below nominal
Hysteresis
130
mV
7.5
10
12.5
%
2
%
Over-Temperature Shutdown
160
°C
Over-Temperature Shutdown
Hysteresis
20
°C
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. Specification for packaged product only.
May 2009
3
M9999-050509-A
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