Datasheet

TPS79201, TPS79225
TPS79228, TPS79230
SLVS337B – MARCH 2001 – REVISED MAY 2002
www.ti.com
2
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
T
J
VOLTAGE PACKAGE PART NUMBER SYMBOL
1.2 to 5.5 V TPS79201DBVT
(1)
TPS79201DBVR
(2)
PEVI
40°Cto125°C
2.5 V
SOT23
TPS79225DBVT
(1)
TPS79225DBVR
(2)
PEXI
–40°C to 125°C
2.8 V
SOT23
(DBV)
TPS79228DBVT
(1)
TPS79228DBVR
(2)
PEWI
3 V TPS79230DBVT
(1)
TPS79230DBVR
(2)
PEYI
(1)
The DBVT indicates tape and reel of 250 parts.
(2)
The DBVR indicates tape and reel of 3000 parts.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
TPS79201, TPS79225
TPS79228, TPS79230
Input voltage range

–0.3 V to 6 V
Voltage range at EN –0.3 V to V
I
+ 0.3 V
Voltage on OUT –0.3 V to 6 V
Peak output current Internally limited
ESD rating, HBM 2 kV
ESD rating, CDM 500 V
Continuous total power dissipation See Dissipation Rating Table
Operating virtual junction temperature range, T
J
–40°C to 150°C
Operating ambient temperature range, T
A
–40°C to 85°C
Storage temperature range, T
stg
–65°C to 150°C
(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 under “recommended operating conditions” is
not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
All voltage values are with respect to network ground terminal.
PACKAGE DISSIPATION RATING
BOARD PACKAGE R
θJC
R
θJA
DERATING FACTOR
ABOVE T
A
= 25°C
T
A
≤ 25°C
POWER RATING
T
A
= 70°C
POWER RATING
T
A
= 85°C
POWER RATING
Low K
(1)
DBV 63.75°C/W 256°C/W 3.906 mW/°C 391 mW 215 mW 156 mW
High K
(2)
DBV 63.75°C/W 178.3°C/W 5.609 mW/°C 561 mW 308 mW 224 mW
(1)
The JEDEC low K (1s) board design used to derive this data was a 3-inch x 3-inch, two layer board with 2 ounce copper traces on top of the board.
(2)
The JEDEC high K (2s2p) board design used to derive this data was a 3-inch x 3-inch, multilayer board with 1 ounce internal power and ground
planes and 2 ounce copper traces on top and bottom of the board.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
Input voltage, V
I
(1)
2.7 5.5 V
Continuous output current, I
O
(2)
0 100 mA
Operating junction temperature, T
J
–40 125 °C
(1)
To calculate the minimum input voltage for your maximum output current, use the following formula:
V
I
(min) = V
O
(max) + V
DO
(max load)
(2)
Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the
device operate under conditions beyond those specified in this table for extended periods of time.