RT6158A
Parameter
Symbol
tSS_EN
tSS
tSS
Test Conditions
Min
Typ
Max
Unit
Time from EN goes H to 90%
VOUT starts ramp up
0.3
1
2
V
IN = 4V, VOUT = 3.5V,
ILOAD = 200mA
Soft-Start Time
0.3
0.6
1
2
2
4
ms
VIN = 2.5V, VOUT = 3.5V,
ILOAD = 200mA
Minimum off Time
Minimum on Time
FB Voltage
tOFF_MIN
tON_MIN
15
25
40
40
65
80
ns
ns
V
CCM operation
0.792
0.8
0.808
High Side Switch On-
Resistance
RDS_ON_A, D VOUT = 5V
RDS_ON_B, C VOUT = 5V
VOVP
12
12
5.3
--
20
20
30
30
5.9
--
m
m
V
Low Side Switch On-
Resistance
Output Over-Voltage
Protection
5.6
200
200
Load Current Threshold, PFM
to PWM
ITH_PWM
ITH_PFM
VIN = 3.6V, VOUT = 3.3V
mA
mA
Load Current Threshold,
PWM to PFM
VIN = 3.6V, VOUT = 3.3V
--
--
FAULT Time
tFAULT
TOTP
15
--
40
70
--
ms
°C
Thermal Shutdown
(Note 5)
(Note 5)
160
Over-Temperature Protection
Hysteresis
TOTP_HYS
ICL
--
20
4.5
0.6
--
5
2
°C
A
Inductor Peak Current Limit
4.3
2
VIN = 2.5V to 5V, VOUT = 3.5V,
Line Regulation
%
CCM, ILOAD = 1.5A
V
IN = 2.5V to 5V, VOUT = 3.5V,
Load Regulation
Line Transient
Load Transient
2
--
0.6
100
250
2
%
CCM operation, ILOAD < 2A
VIN = 3V to 3.6V at 10s, VOUT
3.5V, ILOAD = 1A
=
=
VOUTp-to-p
200
400
mV
mV
VIN = 3.4V, VOUT = 3.5V, ILOAD
0.5A to 1A at 1s
--
Note 1. Stresses beyond those listed under “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 under natural convection (still air) at TA = 25°C with the component mounted on a high effective-
thermal-conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. TOTP and TOTP_HYS are guaranteed by design.
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6158A-05 August 2019
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
