TS2509 Taiwan Semiconductor Company, TS2509 Datasheet - Page 2

• Manufacturer Part Number: TS2509
• Description: 3A / 500KHz PWM Buck Converter
• Manufacturer: Taiwan Semiconductor Company

Electrical Specifications
Block Diagram
Pin Assignment
Characteristics
Feedback Voltage
Quiescent Current
Feedback Bias Current
Shutdown Supply Current
Current limit
Line Regulation
Load Regulation
Oscillation Frequency
EN Pin Logic input
threshold voltage
EN Pin Input Current
Soft-Start Time
Internal MOSFET
Efficiency
Thermal Shutdown Temp.
Name
Comp
Vcc
Vss
SW
EN
FB
Feedback pin
H: Normal operation (Step-down)
L: Step-down operation stopped (All circuit deactivated)
Compensation pin
Switch pin. Connect external inductor/diode here
IC power supply pin
Gnd pin
(V
∆V
∆V
Description
IN
Symbol
=12V, Ta=25
R
OUT
OUT
F
V
E
V
V
T
T
I
I
I
I
I
DSON
SW
OSC
I
SD
SH
FB
SL
SH
SS
FFI
SD
FB
SL
q
/V
/V
OUT
OUT
o
I
V
I
V
V
I
SW pin
High (regulator ON)
Low (regulator OFF)
V
V
V
V
V
C unless otherwise noted)
OUT
OUT
OUT
FB
EN
CC
EN
EN
CC
CC
OUT
=1.2V force driver off
=0.1A
=0.1A
=0V
= 5V~23V, I
=2.5V (ON)
=0.3V (OFF)
= 5V, V
= 12V, V
= 0.1 to 3A
= 5V
Conditions
2/9
FB
FB
3A / 500KHz PWM Buck Converter
=0V
=0V
OUT
I
I
OUT
OUT
=0.2A
= 2A
= 3A
0.784
Min
400
2.0
0.3
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4
0.800
Typ
500
125
-10
0.1
0.6
0.2
20
90
60
91
90
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3
2
4
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TS2509
0.816
Max
600
140
0.5
1.2
0.4
0.8
10
90
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5
8
Version: A09
Units
KHz
mA
mΩ
ms
uA
uA
uA
uA
ºC
%
%
%
V
A
V