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MIC24046 Datasheet(PDF) 4 Page - Microchip Technology

Part # MIC24046
Description  Pin-Programmable, 19V Input, 5A Step-Down Converter
PDF  38 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MIC24046 Datasheet(HTML) 4 Page - Microchip Technology

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MIC24046
DS20006677A-page 4
2022 Microchip Technology Inc.
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, VIN = VINLDO = 12V; CVDDA = 2.2 µF, CVDDP = 2.2 µF,
TA = +25°C. Bold values valid for –40°C  TJ  +125°C. (Note 1)
Parameter
Symbol
Min.
Typ.
Max.
Units
Test Conditions
VIN Supply
Input Range
VINLDO
4.5
—
19
V
—
VIN
2.5
—
19
V
VDDA = VINLDO = 5V, externally
applied
Disable Current
IVINQ
—
0.2
2
µA
EN/DLY = 0V
IVINLDOQ
—
35
42
µA
EN/DLY = 0V, TA = TJ = 25°C
—
—
56
µA
EN/DLY = 0V, −40°C ≤ TJ ≤ +125°C
Operating Current
IVINOp
—
0.45
0.75
mA
EN/DLY > 1.28V,
VOUTSNS = 1.15 × VOUT(NOM),
no switching, TA = TJ = 25°C
IVINLDOOp
—
5.6
7
mA
EN/DLY > 1.28V,
VOUTSNS = 1.15 × VOUT(NOM),
no switching, TA = TJ = 25°C
VDDA 5V Supply
Operating Voltage
VDDA
4.8
5.1
5.4
V
EN/DLY > 0.58V, I(VDDA) = 0 mA to
10 mA
Dropout Operation
3.6
3.75
—
V
VINLDO = 4.5V, EN/DLY > 0.58V,
I(VDDA) = 10 mA
VDDA Undervoltage Lockout
VDDA UVLO Rising
UVLO_R
3.1
3.5
3.9
V
VDDA Rising, EN/DLY > 1.28V
VDDA UVLO Falling
UVLO_F
2.87
3.2
3.45
V
VDDA Falling, EN/DLY > 1.28V
VDDA UVLO Hysteresis
UVLO_H
—
300
—
mV
—
EN/DLY Control
LDO Enable Threshold
EN_LDO_R
—
507
580
mV
Turns On VDDA LDO
LDO Disable Threshold EN_LDO_F
460
491
—
mV
Turns Off VDDA LDO
LDO Threshold Hyster-
esis
EN_LDO_H
—
16
—
mV
—
EN/DLY Rising Thresh-
old
EN_R
1.14
1.21
1.28
V
Initiates power-stage operation
EN/DLY Falling Thresh-
old
EN_F
—
1.06
—
V
Stops power-stage operation
EN/DLY Hysteresis
EN_H
—
150
—
mV
—
EN/DLY Pull-up Current
EN_I
1
2
3
µA
TA = TJ = 25°C
Switching Frequency
Programmable
Frequency (High Z)
fsz
360
400
440
kHz
FREQ = High Z (open)
Programmable
Frequency 0
fs0
500
565
630
kHz
FREQ = Low (GND)
Programmable
Frequency 1
fs1
700
790
880
kHz
FREQ = High (VDDA)
Note 1: Specification for packaged product only.
2: When VIN=2.5V to 4.5V, VDDA=VINLDO=5V needs to be applied.



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