MIC22600 Datasheet, PDF (3/17 Pages) Micrel Semiconductor – 1MHz 6A Integrated Switch Synchronous Buck Regulator

Micrel, Inc.
MIC22600
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .........................................................6V
Output Switch Voltage (V_SW) ............................................6V
Output Switch Current (I_SW).......................Internally Limited
Logic Input Voltage (V_EN, V_LQ)........................... V_IN to –0.3V
Storage Temperature (T_s) .........................–65°C to +150°C
ESD Rating⁽³⁾.................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)......................................... 2.6V to 5.5V
Junction Temperature (T_J) ..................–40°C ≤ T_J ≤ +125°C
Thermal Resistance
4x4 MLF-24 (θ_JC) ...............................................14°C/W
4x4 MLF-24 (θ_JA) ...............................................40°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_EN = 3.3V; V_OUT = 1.8V, unless otherwise specified. Bold values indicate –40°C< T_J < +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
V_EN =>1.34V; V_FB = 0.9V (not switching)
V_EN = 0V
± 1%
± 2% (over temperature)
850 1300
µA
5
10
µA
0.693 0.7 0.707
V
0.686
0.714
V
FB Pin Input Current
1
100
nA
Current Limit in PWM Mode
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
Switch ON-Resistance PFET
Switch ON-Resistance NFET
Oscillator Frequency
V_FB = 0.5*V_NOM
V_OUT 1.8V; V_IN = 2.6 to 5.5V, I_LOAD= 100mA
100mA < I_LOAD < 6000mA, V_IN = 3.3V
V_FB ≤ 0.5V
I_SW = 1000mA; V_FB=0.5V
I_SW = 1000mA; V_FB=0.9V
6.5
9
11.5
0.2
0.2
100
0.03
0.025
0.8
1
1.2
A
%
%
%
Ω
Ω
MHz
EN/DLY Threshold Voltage
1.14 1.24 1.34
V
EN/DLY Source Current
RC Pin I_RAMP
Power On Reset I_PG(LEAK)
V_IN = 2.6 to V_IN = 5.5V
Ramp Control Current
V_PORH = 5.5V; POR = High
0.7
1
1.3
µA
0.7
1
1.3
µA
1
µA
2
µA
Power On Reset V_PG(LO)
Power On Reset V_PG
Output Logic-Low Voltage (undervoltage condition),
I_POR = 5mA
Threshold, % of V_OUT 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.
September 2007
3
M9999-092007-A