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PDF TD34063 Data sheet ( Hoja de datos )
| Número de pieza | TD34063 | |
| Descripción | 1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER | |
| Fabricantes | Techcode | |
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1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Datasheet
TD34063
General Description
Features
The TD34063 is a monolithic switching regulator
control circuit which contains the primary functions
required for DC-DC converters. This device
consists of internal temperature compensated
reference, voltage comparator, controlled duty cycle
oscillator with active current limit circuit, driver
and high current output switch.
Operation from 3.0V to 36V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.5A
Output Voltage Adjustable
Operation Frequency up to 180KHz
Precision 2% Reference
The TD34063 is specifically designed as a general
DC-DC converter to be used in Step-Down,
Step-Up and Voltage-Inverting applications with a
minimum number of external components.
The TD34063 is available in 2 packages: SOIC-8
and DIP-8.
Applications
Battery Chargers
ADSL Modems
Hubs
Negative Voltage Power Supplies
Package Types
Figure 1. Package Types of TD34063
July, 10, 2007.
Techcode Semiconductor Limited
1 www.tongchuangwei.com
1 page  
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Datasheet
TD34063
Electrical Characteristics
(VCC=5.0 V, TA=-40 to 85oC, unless otherwise specified.)
Parameter
Symbol
Conditions
Min Typ Max Unit
OSCILLATOR
Frequency
Charge Current
Discharge Current
fOSC
ICHG
IDISCHG
VPIN5=0V, CT=1.0nF TA=25℃ 24
29
VCC=5.0V to 36V, TA=25℃
30 38
VCC=5.0V to 36V, TA=25℃
180 240
44 KHz
45 uA
290 uA
Discharge to
Charge Current
IDISCHG/ICHG
Pin 7 to VCC, TA=25℃
5.2 6.5 7.5
Ratio
Current Limit
Sense Voltage
VIPK(sense)
ICHG=IDISCHG, TA=25℃
250 300 350 mV
OUTPUT SWITCH(Note3)
Saturation
Voltage,Dalington
Connection
Saturation Voltage
(Note 4.)
VCE(sat)
VCE(sat)
ISW=1.0A, Pins 1, 8 connected,
Common Emitter
ISW=1.0A, RPIN8=82Ω to
VCC,Forced β=20, Common
1.0 1.3
V
0.45 0.7
V
DC Current Gain
Emitter
hFE ISW=1.0A, VCE=5.0V,TA=25℃ 50 75
Collector
Off-State Current
IC(off)
VCE=36V
0.01 100 uA
COMPARATOR
TA=25℃
Threshold Voltage VTH TA=-40 to 85℃
1.225 1.250 1.275
1.21 1.250 1.29
V
Threshold Voltage
Line Regulation
REGLINE
VCC=3.0V to 36V
1.4 5 mV
Input Bias Current IIB VIN=0V
-20 -400 nA
TOTAL DEVICE
VCC=5.0V to 36V,
Supply Current
ICC
CT=1.0nF,VPIN7=VCC, VPIN5 >
4 mA
VTH,VPIN2=GND, other pins open
Note 3: Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient
temperature as possible.
Note 4: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤ 300mA)
and high driver currents (≥ 30mA), it may take up to 2.0us for it to come out of saturation. This condition will shorten the
off time at frequencies 30KHz, and is magnified at high temperatures. This condition does not occur with a Darlington
configuration, since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive
condition is recommended:
July, 10, 2007.
Techcode Semiconductor Limited
5 www.tongchuangwei.com
5 Page 
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Datasheet
TD34063
Package Information
SOP8 Package Outline Dimensions
July, 10, 2007.
Techcode Semiconductor Limited
11 www.tongchuangwei.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet TD34063.PDF ] | |
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