TS2576 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – 3A Step Down Switching Voltage Regulator

TS2576
3A Step Down Switching Voltage Regulator
Pin assignment:
1. Input
2. Output
3. Ground
4. Feedback
5. Enable
52KHz Oscillating Frequency
Output Current up to 3A
Enable Input Control
General Description
The TS2576 Series are step-down switching regulators with all required active functions. It is capable of driving 3A load
with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an
adjustable output version.
The TS2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. Also it requires a
minimum number of external components. It substantially not only reduces the area of board size but also the size of heat
sink, and in some cases no heat sink is required. The ±4% tolerance on output voltage within specified input voltages and
output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±10%. External shutdown is
included. Featuring 70µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as
thermal shutdown for full protection under fault conditions.
This series are offered in 5-pin TO-263, TO-220 package.
Features
Ordering Information
— Guaranteed 3A output current
— 3.3V, 5V, and adjustable versions
— Wide input voltage range, up to 40V
— Internal oscillator of 52KHz fixed frequency
— Wide adjust version output voltage range, from 1.23V
to 37V ±4% max. at over line and load conditions.
— Low standby current, typ. 70µA, at shutdown mode
— Requires only 4 external components
— Thermal shutdown and current limit protection
— P+ product enhancement tested
Applications
Part No.
Operating Temp. Package
(Ambient)
TS2576CZ5-xx
TS2576CZ5
-20 ~ +85 ^oC
TO-220-5L
TS2576CM5-xx
TO-263-5L
TS2576CM5
Note: Where xx denotes voltage option, available are
12V, 5V and 3.3V. Leave blank for adjustable
version. Contact factory for additional voltage
options.
— LCD Monitors
— ADD-ON Cards Switching Regulators
— High Efficiency Step-Down Regulators
— Efficient Pre-regulator for Linear Regulators
— Positive to Negative converter (Buck-Boost)
Absolute Maximum Rating
Input Voltage
Vin
+45
V
ENABLE Pin Input Voltage
Vin (operate)
-0.3V ≤ V ≤ Vin
V
Power Dissipation
P_D
Internal Limited
W
Operating Junction Temperature Range
T_J
-0 ~ +150
o_C
Storage Temperature Range
T_STG
-65 ~ +150
o_C
Lead Soldering Temperature (260 ^oC)
TO-220-5L / TO-263-5L Package
5
S
TS2576
1-7
2003/12 rev. A