TS2581 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – PWM Controller

TS2581
PWM Controller
SOP-8
Pin Definition:
1. EN/CT 8. FB
2. GND
7. OVP
3. VGATE
4. VCC
6. VSENSE
5. GATE
General Description
The TS2581 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip, mainly designs for power-
supply regulator. All the functions include an error amplifier, a soft-start, UVLO, OVP, SCP, TSD circuitry.
This device features an internal 100KHz oscillator, the UVLO makes sure that the outputs are off until the internal
circuit operates normally.
Features
● Input voltage：8V to 40V
● Duty ratio：0% to 100% PWM control
● Oscillation frequency：100K/300KHz
● Thermal Shutdown function.
● Short Circuit Protect (SCP).
● External SW P-channel MOS.
● External OVP setting function.
● Current mode non-synchronous PWM converter
● External current limit setting.
● Under voltage Lockout.
Ordering Information
Part No.
Package
Packing
TS2581CS RLG
SOP-8 2.5kpcs / 13” Reel
Note: “G” denotes for Halogen Free
Application
● Simple High-efficiency Step down Regulator
● Charger
● Telecommunication
Absolute Maximum Rating
Parameter
VIN Pin Voltage
VGATE,ISENSE Pin Voltage
Feedback, OVP, EN/CT Pin Voltage
Switch Pin Voltage
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Operating Supply Voltage
Symbol
V_IN
V_SW
PD
T_ST
T_OP
V_OP
Limit
GND - 0.3 to GND + 45
GND - 0.3 to V_IN
GND - 0.3 to 6
GND - 0.3 to V_IN + 0.3
(T_J – T_A)/ θ_JA
-40 to +165
-20 to +125
+8.5 to +40
Unit
V
V
V
V
W
°C
°C
V
Thermal Information
Parameter
Symbol
Maximum
Unit
Thermal Resistance (Junction to Case)
Ó¨_JC
15
o_C/W
Thermal Resistance (Junction to Ambient)
Ó¨_JA
40
o_C/W
Note1: Ó¨_JA is measured on the PCB with minimum copper area.
Note2: Ó¨_JA is measured with the PCB copper area (need connect to GROUND pins) of approximately 0.5 in²
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Version: A11