RT6158A
Parameter
Symbol
t
SS_EN
Soft-Start Time
t
SS
t
SS
Minimum off Time
Minimum on Time
FB Voltage
High Side Switch On-
Resistance
Low Side Switch On-
Resistance
Output Over-Voltage
Protection
t
OFF_MIN
t
ON_MIN
CCM operation
R
DS_ON_A, D
V
OUT
= 5V
R
DS_ON_B, C
V
OUT
= 5V
V
OVP
V
IN
= 3.6V, V
OUT
= 3.3V
V
IN
= 3.6V, V
OUT
= 3.3V
Test Conditions
Time from EN goes H to 90%
VOUT starts ramp up
V
IN
= 4V, V
OUT
= 3.5V,
I
LOAD
= 200mA
V
IN
= 2.5V, V
OUT
= 3.5V,
I
LOAD
= 200mA
Min
0.3
0.3
0.6
15
25
0.792
12
12
5.3
--
--
15
(Note 5)
(Note 5)
--
--
4.3
V
IN
= 2.5V to 5V, V
OUT
= 3.5V,
CCM, I
LOAD
= 1.5A
V
IN
= 2.5V to 5V, V
OUT
= 3.5V,
CCM operation, I
LOAD
< 2A
V
OUTp-to-p
V
IN
= 3V to 3.6V at 10s, V
OUT
=
3.5V, I
LOAD
= 1A
V
IN
= 3.4V, V
OUT
= 3.5V, I
LOAD
=
0.5A to 1A at 1s
2
2
--
--
Typ
1
1
2
40
40
0.8
20
20
5.6
200
200
40
160
20
4.5
0.6
0.6
100
250
Max
2
2
4
65
80
0.808
30
30
5.9
--
--
70
--
--
5
2
2
200
400
ns
ns
V
m
m
V
mA
mA
ms
°C
°C
A
%
%
mV
mV
ms
Unit
Load Current Threshold, PFM
I
TH_PWM
to PWM
Load Current Threshold,
PWM to PFM
FAULT Time
Thermal Shutdown
Over-Temperature Protection
Hysteresis
Inductor Peak Current Limit
Line Regulation
Load Regulation
Line Transient
Load Transient
I
TH_PFM
t
FAULT
T
OTP
T
OTP_HYS
I
CL
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.
θ
JA
is measured under natural convection (still air) at T
A
= 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.
T
OTP
and T
OTP_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 ]
