TS2507 Datasheet, PDF (1/9 Pages) Taiwan Semiconductor Company, Ltd – 0.5A / 330KHz PWM Buck Controller

TS2507
0.5A / 330KHz PWM Buck Controller
SOP-8
Pin Definition:
1. EN
5. FB
2. Comp 6. Vss
3. Ocset 7. LX
4. Vcc
5. Gate
General Description
The TS2507 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip. These devise include a
reference voltage source, oscillation circuit, error amplifier and etc. TS2507 provides low-ripple power, high efficiency,
and excellent transient characteristics. The PWM control circuit is able to very the duty ratio linearly form 0 up to
100%. This controller also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at
startup. An enable function, an over current protect function and short circuit protect function are built inside, and
when OCP or SCP happens, the operation frequency will be reduced. Also, an internal compensation block is built in
to minimum external component count. With the addition of an external P-channel Power MOS, a coil, capacitors, and
a diode connected externally, these components can function as step-down switching regulators. They serve as ideal
power supply units for portable devices when coupled with the SOP-8, providing such outstanding features as low
current consumption. Since this converter can accommodate an input
Features
● Input Voltage: 3.6V~24V
● Output Voltage: 0.8V~Vcc
● Duty Ratio: 0%~100% PWM Control
● Oscillation Frequency: 330kHz typ.
● Soft-Start (SS), Current Limit (CL), Enable Function
● Thermal Shutdown Function
● Short Circuit Protect (SCP)
● External SW P-Channel MOSFET
● Low ESR Output Capacitor Application
● SOP-8 Pb-Free Package
Ordering Information
Part No.
TS2507CS RL
Package
SOP-8
Packing
2.5Kpcs / 13” Reel
Application
● Simple High-efficiency Step down Regulator
● On-Card Switching Regulators
Absolute Maximum Rating
Parameter
Symbol
Rating
Unit
V_CC Pin Voltage
V_CC
Feedback Pin Voltage
V_FB
ON/OFF Pin Voltage
V_EN
Switch Pin Voltage
V_SW
Power Dissipation
P_D
Storage Temperature Range
T_ST
Operating Temperature Range
T_OP
Operating Supply Voltage
V_OP
Thermal Resistance from Junction to case
θ_JC
Thermal Resistance from Junction to ambient
θ_JA
VSS - 0.3 to VSS + 26
VSS - 0.3 to VCC
VSS - 0.3 to VCC + 0.3
VSS - 0.3 to VCC + 0.3
Internally limited
-40 to +150
-20 to +125
+3.6 to +24
40
120
V
V
V
V
mW
Ċ

Ċ

V
Ċ/W
Ċ/W
1/9
Version: A07