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 鹵4% tolerance on output voltage within specified input voltages and
output load conditions is guaranteed. Also, the oscillator frequency accuracy is within 鹵10%. External shutdown is
included. Featuring 70碌A (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
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 鹵4% max. at over line and load conditions.
Low standby current, typ. 70碌A, at shutdown mode
Requires only 4 external components
Thermal shutdown and current limit protection
P+ product enhancement tested
Ordering Information
Part No.
TS2576CZ5-
xx
TS2576CZ5
TS2576CM5-
xx
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.
-20 ~ +85 C
TO-263-5L
o
Operating Temp.
(Ambient)
Package
TO-220-5L
Applications
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
ENABLE Pin Input Voltage
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 C)
TO-220-5L / TO-263-5L Package
5
S
o
Vin
Vin (operate)
P
D
T
J
T
STG
+45
-0.3V
鈮?/div>
V
鈮?/div>
Vin
Internal Limited
-0 ~ +150
-65 ~ +150
V
V
W
o
o
C
C
TS2576
1-7
2003/12 rev. A
1
2
3
4
5
6
7
