MIC23158_13 Datasheet, PDF (4/21 Pages) Micrel Semiconductor – 3MHz PWM Dual 2A Buck Regulator with HyperLight Load and Power Good

Micrel Inc.
MIC23158/9
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (AVIN1, AVIN2, VIN1, VIN2).... −0.3V to 6V
Switch1 (V_SW1), Sense1 (V_SNS1)......................−0.3V to VIN1
Enable1 (V_EN1), Power Good1 (V_PG1) .............−0.3V to VIN1
Feedback1 (V_FB1) ......................................... −-0.3V to VIN1
Switch2 (V_SW2), Sense2 (V_SNS2)...................... -0.3V to VIN2
Enable2 (V_EN2), Power Good2 (V_PG2) .............−0.3V to VIN2
Feedback2 (V_FB2) ...........................................−0.3V to VIN2
Power Dissipation T_A = 70°C ....................Internally Limited
Storage Temperature Range ....................−65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽³⁾..................................................ESD sensitive
Operating Ratings⁽²⁾
Supply Voltage (AVIN1, VIN1) ..................... +2.7V to +5.5V
Supply Voltage (AVIN2, VIN2) ..................... +2.7V to +5.5V
Enable Input Voltage (V_EN1, V_EN2) ...................... 0V to V_IN1,2
Output Voltage Range (V_SNS1, V_SNS2) .......... +1.0V to +3.3V
Junction Temperature Range (T_J) ...... −40°C ≤ T_J ≤ +125°C
Thermal Resistance
3mm x 4mm MLF-20 (θ_JA) ................................. 53°C/W
Electrical Characteristics⁽⁴⁾
TA = 25°C; AVIN1,2 = VIN1,2 = VEN1,2 = 3.6V; L1,2 = 1.0µH; COUT1,2 = 4.7µF unless otherwise specified.
Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Condition
Min.
Supply Voltage Range
2.7
Undervoltage Lockout Threshold Rising
2.45
Undervoltage Lockout Hysteresis
Quiescent Current
IOUT = 0mA , SNS > 1.2 * VOUTNOM (both outputs)
Shutdown Current
VEN = 0V; VIN = 5.5V (per output)
Feedback Regulation Voltage
IOUT = 20mA
0.6045
Feedback Bias Current
(per output)
Typ.
2.55
75
45
0.1
0.62
0.01
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch RDSON
Switching Frequency
Soft-Start Time
Soft-Start Current
Power Good Threshold (Rising)
Power Good Threshold Hysteresis
Power Good Delay Time
Power Good Pull-Down Resistance
SNS = 0.9*VOUTNOM
VIN = 3.6V to 5.5V if VOUTNOM < 2.5V, IOUT = 20mA
VIN = 4.5V to 5.5V if VOUTNOM ≥ 2.5V, IOUT = 20mA
DCM, VIN = 3.6V if VOUTNOM < 2.5V
DCM, VIN = 5.0V if VOUTNOM ≥ 2.5V
CCM, VIN = 3.6V if VOUTNOM < 2.5V
CCM, VIN = 5.0V if VOUTNOM ≥ 2.5V
ISW1,2 = 100mA PMOS
ISW1,2 = -100mA NMOS
IOUT = 180mA
VOUT = 90%, CSS = 470pF
VSS = 0V
Rising
2.2
4.3
0.45
0.55
1.0
0.8
0.20
0.19
3
300
2.7
86
92
7
68
95
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, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Max.
5.5
2.65
90
5
0.6355
Units
V
V
mV
µA
µA
V
µA
A
%/V
%
Ω
MHz
µs
µA
96
%
%
µs
Ω
November 2012
4
M9999-110812-A