RT6236A Datasheet, PDF (8/22 Pages) Richtek Technology Corporation – ACOT Synchronous Step-Down Converter

RT6236A/B
Parameter
Symbol
Test Conditions
Min Typ Max Unit
PVCC Output
PVCC Output Voltage
PVCC Line Regulation
PVCC Load Regulation
PVCC Output Current
VPVCC
IPVCC
6V  VIN  18V, 0 < IPVCC  5mA
6V  VIN  18V, IPVCC = 5mA
0  IPVCC  20mA
VIN = 6V, VPVCC = 4V, TA = 25C
--
5
--
V
--
--
--
--
20
100
mV
-- 150 -- mA
Internal MOSFET
High-Side On-Resistance
Low-Side On-Resistance
RDS(ON)_H
RDS(ON)_L
VBOOT  VSW = 5V
--
51
--
--
18
--
m
Current Limit
Low-Side Switch Valley
Current Limit
ILIM
6.6 7.7 8.9
A
Thermal Shutdown
Thermal Shutdown Threshold TSD
Thermal Shutdown Hysteresis TSD
-- 150 --
--
20
--
C
On-Time Timer Control
On-Time
Minimum On-Time
Minimum Off-Time
tON
tON(MIN)
tOFF(MIN)
VOUT = 1.2V
-- 153 --
--
60
--
ns
-- 230 --
Soft-Start
Internal Charge Current
VSS = 0V
5
6
7
A
Power Good
PGOOD Good Rising
Threshold
PGOOD Good Falling
Threshold
PGOOD Sink Current
VFB Rising (Good)
VFB Rising (Fault)
VFB Falling (Good)
VFB Falling (Fault)
PGOOD = 0.1V
85 90 95
--
--
120
112
--
--
%VFB
--
80
--
10 20
--
mA
Output Under Voltage and Over Voltage Protections
OVP Trip Threshold
OVP Detect
OVP Propagation Delay
UVP Trip Threshold
UVP Detect
Hysteresis
UVP Propagation Delay
UVP Enable Delay
Relative to Soft-Start Time
115 120 125 %VFB
--
10
--
s
55 60 65
--
10
--
%VFB
-- 250 --
s
--
tSS
x 1.7
--
--
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. θJA is measured at TA = 25°C on a highly thermal conductive 4-Layer test board. θJC is measured at the top of the
package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
8
is a registered trademark of Richtek Technology Corporation.
DS6236A/B-02 August 2016