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Datasheet
2.5A 150KHZ PWM Buck DC/DC Converter
TD1507
October, 20, 2005.
Techcode Semiconductor Limited
4
Absolute Maximum Ratings
Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
Parameter
Value
Unit
Supply Voltage Vin
-0.3 to 40
V
Feedback VFB pin voltage
-0.3 to Vin+0.3
V
ON/OFF Pin voltage
-0.3 to Vin+0.3
V
Output pin voltage
-0.3 to Vin+0.3
V
Output Voltage to Ground (Steady State)
-1
V
Power Dissipation
Internally limited
W
Operating Temperature Range
-40 to +125
ºC
Storage Temperature
-65 to +150
ºC
Lead Temperature (Soldering, 10 sec)
200
ºC
ESD(HM)
2000
V
Electrical Characteristics
Unless otherwise specified, Vin = 12V. Iload = 0.5A, Ta = 25
℃.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Ib
Feedback bias current
VFB=1.3V
10
50/100
nA
IQ
Quiescent current
VFB=12V force driver off
5
10
mA
ISTBY
Standby quiescent current
ON/OFF=5V, VIN=36V
70
150
uA
FOSC
Oscillator frequency
127
150
173
KHz
VSAT
Saturation voltage
IOUT=2A
1.10
1.4/1.5
V
ICL
Current Limit
Peak Current (VFB=0V)
4.5
5.5/6.5
A
Output leakage current
Output=0V (VFB=12V)
50
uA
IL
IL
Output leakage current
Output=-1V (VIN=36V)
2
30
mA
Low (Regulator ON)
1.3
0.6
V
VIL
VIH
ON/OFF pin logic input
Threshold voltage
High (Regulator OFF)
2.0
1.3
V
IH
ON/OFF pin input current
VLOGIC=2.5V(Regulator OFF)
5
15
uA