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RT4805AWSC Datasheet(PDF) 8 Page - Richtek Technology Corporation

Part # RT4805AWSC
Description  Synchronous Boost Regulator with Bypass Mode
PDF  22 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT4805AWSC Datasheet(HTML) 8 Page - Richtek Technology Corporation

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RT4805A
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
DS4805A-02
April
2017
8
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Logic Level Low EN, VSEL,
nBYP, SCL, SDA
VIL
--
--
0.4
V
Output Voltage Accuracy
VREG
VOUT  VIN > 100mV, PWM
2
--
2
%
Minimum On Time
TON
VIN = 3V, VOUT = 3.5V,
ILOAD > 1000mA
--
80
--
ns
Maximum Duty Cycle
DMAX
40
--
--
%
Switching Frequency
FSW
VIN = 2.65V, VOUT = 3.5V,
ILOAD = 1000mA
2
2.5
3
MHz
Boost Valley Current Limit
ICL
VIN = 2.9V
3.5
4
4.5
A
Soft-Start Input Current Limit
ISS_PK
LIN1
--
1000
--
mA
Soft-Start Input Current Limit
ISS_PK
LIN2
--
2000
--
mA
Pass Through Mode Current
Limit
IBPCL
VIN = 3.2V
--
4
--
A
N-Channel Boost Switch
RDS(ON)
RDSN
VIN = 3.2V, VOUT = 3.5V
--
60
95
m
P-Channel Boost Switch
RDS(ON)
RDSP
VIN = 3.2V, VOUT = 3.5V
--
40
80
m
N-Channel Bypass Switch
RDS(ON)
RDSP_BYP
VIN = 3.2V, VOUT = 3.5V
--
40
60
m
Hot Die Trigger Threshold
THD
--
100
--
oC
Hot Die Release Threshold
THDR
--
90
--
oC
Over Temperature Protection
TOTP
--
160
--
oC
Over Temperature Protection
Hysteresis
TOTP_HYS
--
20
--
oC
FAULT Restart Time
TRST
--
1
--
ms
Note 1.
Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect
device reliability.
Note 2.
JA is measured at TA = 25C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.



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