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TP78Lxx-1 Series
DESCRIPTION Wide Input Non-Isolated & Regulated Single Output
TP78LXX-1 series switching regulators are ideal replacement for TP78xx linear regulators
and LDOs. The efficiency of up to 97% means that very little energy is wasted as heat so
there is no need for any heat sinks with their additional space and mounting costs. They are
widely used in industrial control, instrumentation, and electric power applications.

FEATURES
ROHS Compliant Wide input non-isolatedregulated single output Efficiency up to 97%
Short circuit protection, Thermal shutdown Temperature range: -40șC ~ +85șC Low ripple noise
SIP package No heat sink required Industry standard pinout




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SELECTION GUIDE
Input Voltage (VDC) Output Efficiency%
Part Number




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Nominal Range VoltageVDC) CurrentmA) Vin (Min) Vin(Max)
TP78L1.5-1 12 4.75~26 1.5 1000 80 71
TP78L1.8-1 12 4.75~26 1.8 1000 83 74
TP78L2.5-1 12 4.75~28 2.5 1000 88 80
TP78L3.3-1 24 4.75~28 3.3 1000 90 83




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TP78L5.0-1 24 6.5~32 5.0 1000 93 88
TP78L6.5-1 24 9.0~32 6.5 1000 94 90
TP78L9.0-1 24 12~32 9.0 1000 95 92




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TP78L12-1 24 16~32 12 1000 96 94
TP78L15-1 24 20~32 15 1000 97 94
The above part number with "L" Suffix are 90° bent pins power converters, for example TP78L1.5-1L.




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OUTPUT CHARACTERISTICS
Parameter Conditions Min Typ. Max. Units
Output voltage accuracy 100% full load ±2 ±3




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Line regulation Vin=min. to max, at full load ±0.2 ±0.4 %
Load regulation 10% to 100% load ±0.4 ±0.6
Ripple & Noise 20MHz bandwidth 25 35 mvp-p




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Short circuit input power 0.5 1.8 W
Short circuit protection Continuous, automatic recovery
Thermal shutdown Internal IC junction 150




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Switching frequency 100% full load 280 330 450 KHz
Output current limit Vin= min. to max.(at full load) Vout:1.5V~3.3V 3000 mA
Output current limit Vin= min. to max.(at full load) Vout:5V~15V 2000 mA
Quiescent current 5 8 mA
Temperature coefficient ­40~+85 ambient ±0.02 %/
Max capacitance load 1000 F
All specifications typical at TA=25șC, nominal input voltage and rated output current unless otherwise specified.
COMMON SPECIFICATIONS
Parameter Conditions Min. Typ. Max. Units
Storage humidity 95
Operating temperature Power derating (above 71șC) -40 85
Operating case temp 100
Storage temperature -55 125
Lead temperature 1.5mm from case for 10 seconds 300
Cooling Free air convection
Case material Plastic (UL94-V0)
MTBF 25MIL-HDBK-217F 2000 k hours
Weight 3.7 g
Hot Plug Unavailable


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TP78Lxx-1 Series
TEMPERATURE DERATING GRAPHS EXTERNAL CAPACITOR TABLE

Part Number C1(Ceramic Capacitor) C2(Ceramic Capacitor)
TP78L1.5-1 10F/50V 22F/6.3V
TP78L1.8-1 10F/50V 22F/6.3V
TP78L2.5-1 10F/50V 22F/6.3V
TP78L3.3-1 10F/50V 22F/6.3V
TP78L5.0-1 10F/50V 22F/16V
TP78L6.5-1 10F/50V 10F/16V




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TP78L9.0-1 10F/50V 10F/16V
TP78L12-1 10F/50V 10F/25V
TP78L15-1 10F/50V 10F/25V




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STANDARD APPLICATION CIRCUIT


TP78LXX-1




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Note:




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1. C1 and C2 are required and should be fitted close to the converter pins.
2. The capacitance of C1,C2 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice.




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3. No parallel connection or plug and play.
TEST CONFIGURATIONSTA=25
1.Efficiency and Output Voltage Ripple Test 25.4 mm 25.4 mm




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12.7 mm

+Vout
3




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+Vin 1 DC/DC Converter Copper strip

1uF 1uF
C1 2 C2 Scope 25.4 mm Load




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Ceramic Tantalum



GND Copper strip



2.2.Start-up and Load Transient Response Test
50.8 mm




+Vout
+Vin 1 DC/DC Converter 3 Copper strip



C1 2 C2 Scope 25.4 mm Load




GND Copper strip




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TP78Lxx-1 Series
MECHANICAL DIMENSIONS PIN CONNECTIONS
SIP Package
90° bent pins power converters(part number with "L" Suffix)

9.00

Pin Function
TOPPOWER 1 +Vin
TP78L5.0-1 TOPPOWER 2 GND
YYWW




17.50
TP78L5.0-1 3 +Vout
17.50




19.00
0.50




YYWW




0.30
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4.10




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5.08 0.50
9.00




bottom view
bottom view



3
0.30




11.50




5.08
9.00




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2
1 2 3
1




0.50
11.50




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4.10
All dimensions in mm ±0.25.All pins on a 2.54mm pitch.


RECOMMENDED FOOTPRINT DETAILS




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90° bent pins power converters(part number with "L" Suffix)




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2.54




1.15




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3 HOLES
1.00

2.54




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Unless otherwise stated all dimensions in mm ±0.5mm.
Unless otherwise stated all dimensions in mm ±0.5mm.

TUBE OUTLINE DIMENSIONS
11.2 11.6

90° bent pins power converters
(part number with "L" Suffix)
20.2




20.6
23.6
26.2




5.2




11.2
Unless otherwise stated all dimensions in mm ±0.5mm. 16.2

6.2 L=520mm ±2mm Packaging quantity:44PCS
L=220mm ±2mm Packaging quantity:17PCS



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