MIC22600_11 Datasheet, PDF (4/32 Pages) Micrel Semiconductor – 1MHz, 6A Integrated Switch Synchronous Buck Regulator

Micrel, Inc.
MIC22600
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (PVIN, SVIN)............................ –0.3V to 6V
Output Switch Voltage (SW) ............................. –0.3V to 6V
Output Switch Current (I_SW).......................Internally Limited
Logic Input Voltage (EN, POR, DELAY) ........... –0.3V to V_IN
Control Voltage (RC, COMP, FB) ..................... –0.3V to V_IN
Lead Temperature (soldering 10sec.)........................ 260°C
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
24-pin ePad TSSOP (θ_JC)...............................12.9°C/W
24-pin ePad TSSOP (θ_JA) ...............................32.2°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.
Supply Voltage Range
2.6
5.5
V_IN Turn-On Voltage Threshold
UVLO Hysteresis
V_IN rising
2.4
2.5
2.6
280
Quiescent Current, PWM Mode
Shutdown Current
Feedback Voltage
V_EN ≥1.34V; V_FB = 0.9V (not switching)
V_EN = 0V
± 1%
± 2% (over temperature)
850
5
0.693
0.686
0.7
1300
10
0.707
0.714
FB Pin Input Current
1
100
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
EN/DLY Threshold Voltage
1.14 1.24 1.34
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
0.7
1
1.3
1
2
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
7.5
10
12.5
2
Over-Temperature Shutdown
160
Over-Temperature Shutdown
Hysteresis
20
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.
Units
V
V
mV
µA
µA
V
nA
A
%
%
%
Ω
MHz
V
µA
µA
µA
mV
%
%
°C
°C
June 2011
4
M9999-062411-D