MIC24045 Datasheet, PDF (6/46 Pages) Microchip Technology – I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

MIC24045
ELECTRICAL CHARACTERISTICS (Note 1)
Electrical Specifications: unless otherwise specified, V_IN = V_INLDO = 12V; C_VDDA = 2.2 µF, C_VDDP = 2.2 µF, T_A = +25°C.
Boldface values indicate -40°C  T_J  +125°C.
Parameter
Symbol
Min.
Typ.
Max. Units
Test Conditions
Output Voltage Accuracy for
OutErr34 -1.5
—
1.5
% 4.75V  V_IN  19V for
Range 3 and 4
V_OUT = 1.98V to 3.42V,
6V  V_IN  19V for V_OUT = 4.75V to
5.25V,
T_A = T_J = -40°C to +125°C,
I_OUT = 0A
Load Regulation
LoadReg
—
0.2
—
% I_OUT = 0A to 5A, V_OUT = 3.3V
Line Regulation
LineReg
—
0.1
—
% 6V < V_IN < 19V, I_OUT = 2A
Internal Soft-Start
Reference Soft-Start
Slew Rate 0
SS_SR0
—
0.16
—
V/ms V_OUT = 0.64 to 1.28V
Reference Soft-Start
Slew Rate 1
SS_SR1
—
0.38
V/ms V_OUT = 0.64 to 1.28V
Reference Soft-Start
Slew Rate 2
SS_SR2
—
0.76
V/ms V_OUT = 0.64 to 1.28V
Reference Soft-Start
Slew Rate 3
SS_SR3
—
1.5
V/ms V_OUT = 0.64 to 1.28V
Power Good (PG)
PG Low Voltage
PG Leakage Current
PG Rise Threshold
PG Fall Threshold
PG Rise Delay
PG Fall Delay
PG_V_OL
PG_I_LEAK
PG_R
PG_F
PG_R_DLY
PG_F_DLY
—
-1
90
87.5
—
—
0.18
0.02
92.5
90
0.45
80
0.4
1
95
92.5
—
—
V I_(PG) = 4 mA
µA V_PG = 5V
% V_OUT Rising
% V_OUT Falling
ms V_OUT Rising
µs V_OUT Falling
Thermal Shutdown
Thermal Shutdown
T_SHDN
—
160
—
°C
Thermal-Shutdown Hysteresis T_{SHDN_HYST} —
25
—
°C
Thermal Warning Threshold
T_ThWrn
—
120
—
°C
Efficiency
Efficiency
I²C Interface
η
—
82.3
—
% V_IN = 12V, V_OUT = 0.9V, I_OUT = 2A,
f_S = 400 kHz, L = 1.2 µH,
T_A = +25°C
SDA, SCL V_IH
V_IH
2
—
—
V V_DDA = 5V (levels are 3.3V
compatible)
SDA, SCL V_IL
V_IL
—
—
1
V V_DDA = 5V (levels are 3.3V
compatible)
SDA, SCL Input High/Low
Current
I_IH, I_IL
-1
—
1
µA
SDA Output Low Voltage
V_OL
—
Note 1: Specification for packaged product only.
—
0.4
V I_SDA = 3 mA
DS20005568A-page 6
 2016 Microchip Technology Inc.