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RT4823WSC Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT4823WSC
Description  Wide Input and Ultra-Low Quiescent Current Boost Converter with High Efficiency
PDF  20 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT4823WSC Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT4823
Copyright © 2022 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS4823-01
September 2022
www.richtek.com
7
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Power-On Reset
VPOR
1.2
1.5
--
V
Enable, FPWM
Low-Level Input Voltage
VIL
--
--
0.4
V
High-Level Input Voltage
VIH
1.2
--
--
V
Input Leakage Current
Ilkg
Input connected to GND or
VIN
--
--
0.5
A
OUTPUT
Regulated DC Output Voltage VOUT
1.8V ≤ VIN ≤ 4.8V, IOUT = 0mA,
PFM operation
5.04
5.06
5.08
V
VIN = 3.6V, IOUT = 1A,
PWM operation
4.95
5
5.05
V
Output Ripple Performance
VOUT_Ripple
VIN = 3.6V, VOUT = 5V,
COUT = 10F, IOUT = 0A to 1A
--
60
120
mV
Power Switch
High-Side MOSFET
rDS_H
--
80
--
m
Low-Side MOSFET
rDS_L
--
80
--
m
Minimum On-Time
tON_MIN
VIN = 1.8V to 4.8V, VOUT = 5V
20
--
60
ns
Maximum Duty Cycle
DMAX
VIN = 1.8V, VOUT = 5V,
IL = 400mA
68.8
--
--
%
Switch Peak Current Limit
(VIN or VOUT > 2.2V)
ILIM(Peak)
VIN = 3.6V, VOUT = 5V
--
2450
--
mA
Switch Valley Current Limit
(VIN or VOUT > 2.2V)
ILIM(Valley)
VIN = 3.6V, VOUT = 5V
--
2150
--
mA
Pass-Through Current Limit
ILIM(Pass)
VIN = 3.6V
250
300
350
mA
Negative OCP
ILIM(Neg)
−3000 −2000 −1000
mA
Oscilator
Oscillator Frequency
fOSC
VIN = 3.6V
3
3.5
4
MHz
VIN < 2.5V → start to reduce
frequency
2
--
--
Soft-Start
Start-Up Time
tSTART_BST
VIN = 3.6V, BP = GND, IOUT =
0mA. Time from active EN to
VOUT
100
400
500
s
Pre-Charge Current Limit
ILIM(Start)
VIN = 3.6V, EN = 0 → 1.8V
250
300
350
mA
Protection
Short-Circuit Protection
VSCP
0.3
0.5
0.7
V
Over-Temperature Protection
TOTP
140
150
160
C
Over-Temperature Protection
Hysteresis
TOTP_HYS
--
20
--
C
Over-Current Protection
ILIM(5A)
VIN = 5V
4
5
5.5
A
Over-Voltage Protection
VOVP
VIN = 3.6V
--
6
--
V



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