Absolute Maximum Ratings
(Note 1)
Vin to GND …………………………………………… –0.3V to +6V
SW Voltage to GND ...…………………… –0.3V to Vin+0.3V
EN Voltage to GND ..……………………………… –0.3V to Vin
FB/Vout to GND ..………………………………… –0.3V to Vin
SW Peak Current ………………………………………….………. 3A
Operating Temperature Range ……...… –40°C to +85°C
Junction Temperature ……………..………….…........ +150°C
Storage Temperature Range …………... –65°C to +150°C
Lead Temperature (Soldering 10s) …………...…. +260°C
ESD Classification …………………………………………… Class 2
CAUTION: Stresses above those listed in “Absolute
Maximum Ratings” may cause permanent damage to
the device. This is a stress only rating and operation of
the device at these or any other conditions above
those indicated in the operational sections of this
specification is not implied.
Electro-Static Discharge Sensitivity
This integrated circuit can be damaged by
ESD. It is recommended that all
integrated circuits be handled with
proper precautions. Failure to observe proper
handling and installation procedures can cause
damage. ESD damage can range from subtle
performance degradation to complete device failure.
Package Thermal Characteristics
(Note 2)
TSOT23-5L:
Thermal Resistance, θJA …………..………………… 250°C/W
Thermal Resistance, θJC …………..………………… 130°C/W
TDFN 2x2-6L:
Thermal Resistance, θJA …………..…………………. 120°C/W
Thermal Resistance, θJC …………..…………………… 20°C/W
Recommended Operating Conditions
(Note 3)
Supply Input Voltage ……….………………… +2.5V to +5.5V
Junction Temperature Range ………… –40°C to +125°C
Ambient Temperature Range …………… –40°C to +85°C
Pins Description
TSOT
23-5L
TDFN
2x2-6L Symbol Description
1 2 EN Enable control input pin.
2 5 GND Ground pin.
3 4 SW Power switch output.
4 3 Vin Main supply pin.
--- 1 NC No connected.
5 6 FB
Feedback pin.
Vout=0.6×(1+R1/R2).
Add optional C1 to speed u
