MIC22200 Datasheet, PDF (3/22 Pages) Micrel Semiconductor – 2A Integrated Switch Synchronous Buck Regulator with Frequency Programmable from 800kHz to 4MHz

Micrel, Inc.
MIC22200
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (P_VIN, S_VIN ) ............................................+6V
Output Switch (SW)..........................................................6V
Logic Voltage (EN/DLY, POR, DELAY) ............VIN to -0.3V
Control Voltage (CF, RC, COMP, FB) ..............VIN to -0.3V
Lead Temperature (soldering 10s)............................. 260°C
Storage Temperature Range (Ts) .............−65°C to +150°C
EDS Rating⁽³⁾.................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +2.6V to +5.5V
Junction Temperature Range (T_J).......−40°C ≤ T_J ≤ +125°C
Thermal Resistance
3mm × 3mm MLF-12L (θ_JA) ...............................40°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_EN = 3.3V, unless otherwise specified. Bold values indicate −40°C ≤ T_J ≤ +125°C
Parameter
Condition
Min.
Typ.
Supply Voltage Range
2.6
Under-Voltage Lockout Threshold
(turn-on)
2.4
2.5
UVLO Hysteresis
280
Quiescent Current, PWM mode
V_EN ≥ 1.34V; V_FB = 0.9V
1.2
Shutdown Current
V_EN = 0V
3.7
Feedback Voltage
± 2% (over temperature)
0.686
0.7
Oscillator Frequency
0.8
1
FB Pin Input Current
1
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
V_FB = 0.9*VNOM
V_IN = 2.6V to 5.5V
100mA < I_LOAD < 2A, V_IN = 3.3V
2
5.5
0.2
0.2
Maximum Duty Cycle
VFB ≤ 0.5V
100
Switch ON-Resistance PFET
Switch ON-Resistance NFET
EN/DLY Threshold Voltage
EN/DLY Hysteresis
I_SW = 1000mA V_FB=0.5V
I_SW = -1000mA V_FB=0.9V
V_IN=3.3V
0.18
0.10
1.14
1.24
12
DELAY Threshold Voltage
V_IN=3.3V
1.14
1.24
DELAY Hysteresis
6
EN/DLY Source Current
V_IN = 2.6 to V_IN = 5.5V
0.7
1
RC Source Current
Ramp Control Current
0.7
1
POR IPG(LEAK)
V_PORH = 5.5V; POR = High
POR VPG(LO)
Output Logic-Low Voltage
(undervoltage condition), I_POR = 5mA
135
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. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
Max.
5.5
2.6
2
10
0.714
1.2
8
1.34
1.34
1.3
1.3
1
2
Units
V
V
mV
mA
µA
V
MHz
nA
A
%
%
%
Ω
V
mV
V
mV
µA
µA
µA
mV
December 2010
3
M9999-120310-C