MIC45404 Datasheet, PDF (4/32 Pages) Microchip Technology – 19V 5A Ultra-Low Profile DC-to-DC Power Module

MIC45404
ELECTRICAL CHARACTERISTICS⁽¹⁾
Electrical Specifications: unless otherwise specified, V_IN = 12V; C_VDDA= 2.2 µF, T_A = +25°C.
Boldface values indicate -40°C  T_J  +125°C.
Parameter
Symbol Min.
Typ.
Max. Units
Test Conditions
V_IN Supply
Input Range
Disable Current
Operating Current
V_IN
4.5
I_VINQ
—
I_VINOp
—
V_DDA 5V Supply
Operating Voltage
Dropout Operation
V_DDA
4.8
3.6
V_DDA Undervoltage Lockout
V_DDA UVLO Rising
V_DDA UVLO Falling
V_DDA UVLO Hysteresis
UVLO_R
UVLO_F
UVLO_H
3.1
2.87
—
EN/DLY Control
LDO Enable Threshold
EN_LDO_R —
LDO Disable Threshold
LDO Threshold Hysteresis
EN_LDO_F 450
EN_LDO_H —
EN/DLY Rising Threshold
EN/DLY Falling Threshold
EN_R
1.14
EN_F
—
EN/DLY Hysteresis
EN_H
—
EN/DLY Pull-up Current
EN_I
1
Switching Frequency
Programmable
Frequency (High Z)
f_SZ
360
Programmable Frequency 0
f_S0
500
Programmable Frequency 1
f_S1
700
Overcurrent Protection
HS Current Limit 0
I_{LIM_HS0}
6.0
HS Current Limit 1
I_{LIM_HS1}
8.1
HS Current Limit High Z
I_{LIM_HSZ}
9.3
Top FET Current Limit
LEB
—
Leading-Edge Blanking Time
LS Current Limit 0
I_{LIM_LS0}
3.0
LS Current Limit 1
I_{LIM_LS1}
4.0
LS Current Limit High Z
I_{LIM_LSZ}
5.0
OC Events Count for Hiccup IN_{HICC_DE}
—
Hiccup Wait Time
t_{HICC_WAIT}
—
Note 1: Specification for packaged product only.
—
33
5.35
5.1
3.75
3.5
3.2
300
515
485
30
1.21
1.06
150
2
400
565
790
7.1
9.3
10.5
108
4.6
6.2
6.8
15
3 x Soft
Start Time
19
60
8.5
5.4
—
3.9
3.45
—
600
—
—
1.28
—
—
3
440
630
880
8.1
10.3
11.9
—
6.3
7.9
8.6
—
—
V
µA EN/DLY = 0V
mA EN/DLY > 1.28V,
OUTSNS = 1.15 x V_OUT(NOM),
no switching
V EN/DLY > 0.58V,
I_VDDA = 0 mA to 10 mA
V V_IN = 4.5V, EN/DLY > 0.58V,
I_VDDA = 10 mA
V V_DDA Rising, EN/DLY > 1.28V
V V_DDA Falling, EN/DLY > 1.28V
mV
mV Turns on V_DDA LDO
mV Turns off V_DDA LDO
mV
V Initiates power stage operation
V Stops power stage operation
mV
µA
kHz FREQ = High Z (open)
kHz FREQ= Low (GND)
kHz FREQ = High (V_DDA)
A I_LIM = Low (GND)
A I_LIM = High (V_DDA)
A I_LIM = High Z (open)
ns
A I_LIM = Low (GND)
A I_LIM = High (V_DDA)
A I_LIM = High Z (Open)
Clock Number of subsequent cycles
Cycles in current limit before entering
hiccup overload protection
Duration of the High Z state on
LX before new soft start.
DS20005478A-page 4
 2015 Microchip Technology Inc.