MIC24046-H Datasheet, PDF (6/24 Pages) Micrel Semiconductor – Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter

Micrel, Inc.
MIC24046-H
Electrical Characteristics⁽⁵⁾ (Continued)
VVIN = VVINLDO = 12V; CVDDA= 2.2µF, CVDDP = 2.2µF, TA = 25°C, unless otherwise noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Units
Gm Error Amplifier
GmEA
Error-Amplifier
Transconductance
1.5
mmho
AEA
Error-Amplifier DC Gain
50000
V/V
ISR_SNK
Error-Amplifier
Source/Sink Current
−400
+400
µA
COMP_H
COMP Output Swing High
2.4
V
COMP_L
COMP Output Swing Low
0.8
V
GmPS
COMP-to-Inductor Current
Transconductance
VOUT = 1.2V, IOUT = 4A
12.5
A/V
Output Voltage DC Accuracy
OutErr12
Output Voltage Accuracy for
Ranges 1 and 2
4.75V ≤ VIN ≤ 19V, VOUT = 0.7V to 1.8V
TA = TJ = −40°C to 125°C, IOUT = 0A
−1
1
%
OutErr3
Output Voltage Accuracy for
Range 3
LoadReg
Load Regulation
LineReg
Line Regulation
Internal Soft-Start
4.75V ≤ VIN ≤ 19V, VOUT = 2.49V to
3.3V
TA = TJ = −40°C to 125°C, IOUT = 0A
IOUT = 0A to 5A
6V< VIN < 19V, IOUT = 2A
−1.5
1.5
%
0.25
%
0.1
%
SS_SR
Reference Soft-Start Slew
Rate
VOUT = 0.7V, 0.8V, 0.9V, 1.0V, 1.2V
0.45
V/ms
Thermal Shutdown
TSHDN
Thermal Shutdown
160
°C
TSHDN_HYST
Efficiency
Thermal-Shutdown Hysteresis
25
°C
η
Efficiency
VIN = 12V, VOUT = 0.9V, IOUT = 2A
82.3
%
fS = fSZ = 400kHz, L = 1.2µH, TA = 25°C
July 7, 2015
6
Revision 1.1