MIC28303 Datasheet, PDF (4/38 Pages) Microchip Technology – 50V, 3A Power Module

MIC28303
TABLE 1-1: ELECTRICAL CHARACTERISTICS
Electrical Characteristics: PV_IN = V_IN = 12V, V_OUT = 5V, V_BST – V_SW = 5V; T_A = 25°C, unless noted. Bold values
indicate –40°C ≤ T_J ≤ +125°C. (Note 1).
Parameters
Min.
Typ.
Max.
Units
Conditions
Power Supply Input
Input Voltage Range (PV_IN,
V_IN)
Controller Supply Current
4.5
—
—
0.4
—
2.1
Operating Current
Shutdown Supply Current
—
0.1
—
0.7
—
27
—
4.0
P_VDD Supply
P_VDD Output Voltage
P_VDD UVLO Threshold
P_VDD UVLO Hysteresis
Load Regulation
4.8
5.2
3.8
4.2
—
400
0.6
2.0
Reference
Feedback Reference Voltage
0.792
0.8
FB Bias Current
0.784
0.8
—
5
Enable Control
EN Logic Level High
EN Logic Level Low
1.8
—
—
—
EN Hysteresis
EN Bias Current
—
200
—
5
Oscillator
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Minimum Off-Time
400
600
—
300
—
85
—
0
140
200
50
0.75
3.0
10
—
—
—
5.4
4.7
—
3.6
0.808
0.816
500
—
0.6
—
20
750
—
—
—
260
V—
mA Current into Pin 60; V_FB = 1.5V
(MIC28303-1)
Current into Pin 60; V_FB = 1.5V
(MIC28303-2)
µA Current into Pin 60; V_EN = 0V
mA I_OUT = 0A (MIC28303-1)
I_OUT = 0A (MIC28303-2)
µA PV_IN = V_IN = 12V, V_EN = 0V
V
V_IN = 7V to 50V, I_PVDD = 10mA
P_VDD rising
mV —
%
I_PVDD = 0 to 40mA
V
T_J = 25°C (±1.0%)
–40°C ≤ T_J ≤ 125°C (±2%)
nA V_FB = 0.8V
V
—
—
mV —
µA V_EN = 12V
kHz FREQ pin = open
R_FREQ = 100 kΩ (FREQ pin-to-GND)
%—
V_FB > 0.8V
ns —
Soft-Start
Soft-Start Time
—
5
—
ms —
Short-Circuit Protection
Current Limit Protection (V_CL)
–30
–14
0
Short-Circuit Threshold
–23
–7
9
Note 1: Specification for packaged product only.
mV V_FB = 0.79V
mV V_FB = 0V
DS20005464A-page 4
 2016 Microchip Technology Inc.