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TS2580 PDF Datasheet - Taiwan Semiconductor

Part Number TS2580
Description 2A / 52KHz Buck Switching Regulator
Manufacturers Taiwan Semiconductor 
Logo Taiwan Semiconductor Logo 
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TS2580 datasheet, circuit
TS2580
2A / 52KHz Buck Switching Regulator
SOP-8
Pin Definition:
1. VIN
8. GND
2. VOUT 7. GND
3. ADJ
6. GND
4. EN
5. GND
General Description
TS2580 Series are step-down switching regulators with all required active functions. It is capable of driving 2A
load with excellent line and load regulations. These devices are available for adjustable output version. TS2580
series operates at a switching frequency of 52kHz thus allowing smaller sized filter components than what would
be needed with lower frequency switching regulators. 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 100µA (typical) standby current. The output switch includes cycle-
by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
Features
Adjustable Output Voltage Range 1.23V~38.5V
52kHz fixed switching frequency
Voltage Mode Non-synchronous PWM control
Thermal Shutdown and Current Limit Protection
ON/OFF Shutdown Control Input
Short Circuit Protect (SCP)
Operating Voltage Can be up to 40V
Output Load Current 2A
Low Power Standby Mode
Ordering Information
Part No.
Package
Packing
TS2580CS RL
SOP-8 2.5kpcs / 13” Reel
TS2580CS RLG SOP-8 2.5kpcs / 13” Reel
Note: “G” denotes Halogen Free Product.
Application
Simple High-efficiency Step down Regulator
Charger
Positive to Negative Converter
Absolute Maximum Rating
Parameter
Maximum Supply Voltage
Recommend Operating Supply Voltage
SW, EN Pin Input Voltage
Feedback Pin Voltage
Power Dissipation
Output Voltage to Ground
Storage Temperature Range
Operating Temperature Range
ESD Susceptibility (HBM)
Symbol
VCC
VOP
VSW, VEN
VFB
PD
VOUT
TST
TOP
Limit
+45
4.5 to 40
-0.3 to +40
-0.3 to +25
Internally Limited
-1
-65 to +150
-40 to +125
2
Unit
V
V
V
V
W
V
oC
oC
kV
Thermal Information
Parameter
Symbol
Maximum
Unit
Thermal Resistance (Junction to Case)
ӨJC 20 oC/W
Thermal Resistance (Junction to Ambient)
ӨJA 60 oC/W
Note1: ӨJA is measured on the PCB with minimum copper area.
Note2: ӨJA is measured with the PCB copper area (need connect to GROUND pins) of approximately 0.5 in2
1/5 Version: B11

1 page
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TS2580 pdf, schematic
TS2580
2A / 52KHz Buck Switching Regulator
Electrical Specifications (Ta = 25oC unless otherwise noted, VIN=12V, ILOAD =0.5A)
Parameter
Symbol
Test Condition
Min
Output Feedback
Efficiency
Feedback Bias Current
Oscillator Frequency
Current Limit
VFB
η
IFB
FOSC
ICL
4.5VVIN 40V
0.2AILOAD 3A
VIN =12V, ILOAD =3A, VOUT =3.3V
VFB = 1.3V (Adjustable Version)
Pear Current, no outside circuit
VFB =0V force driver on
1.180
--
--
40
2.2
Saturation Voltage
VSAT
IOUT=2A, No outside circuit
VFB =0V force driver on
--
ON/OFF Pin Logic Input
Threshold Voltage
ON/OFF Pin Logic Input Current
Maximum Duty Cycle (ON)
Maximum Duty Cycle (OFF)
VIL Low (regulator ON)
--
VIH High (regulator OFF)
2.0
IL VLOGIC =2.5V (OFF)
--
IH VLOGIC =0V (ON)
--
VFB =0V force driver on
--
DC VFB =1.5V for ADJ version force --
driver off
Quiescent Current
IQ VFB =1.5V force driver off
--
Standby Quiescent Current
ISTBY
ON/OFF pin=5V
VIN =40V
--
SW Pin Leakage SW pin=0V
Current
SW pin=-0.8B
No outside circuit, VFB =1.5V for
--
ISWL ADJ version force force driver off
VIN =40V force driver off
--
Block Diagram
Typ
1.23
78
10
52
--
1.2
1.3
-0.1
-0.01
100
0
4
100
--
-5
Max
1.280
--
50
65
--
1.4
0.6
--
-10
-1
--
--
8
200
-200
--
Unit
V
%
nA
KHz
A
V
V
µA
%
mA
µA
uA
mA
2/5 Version: B11

2 Page
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TS2580 equivalent
TS2580
2A / 52KHz Buck Switching Regulator
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to
any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of
sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty,
relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose,
merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify TSC for any damages resulting from such improper use or sale.
5/5 Version: B11

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