TX78XXM General Description:
The TX78XXM series is a group of positive voltage output, three-pin regulators, it provide a high current even when the input/output voltage differential is small. Low power consumption and high accuracy is achieved through CMOS and laser trimming technologies.
The TX78XXM consists of a high-precision voltage reference, an error amplification circuit, and a current limited output driver. Load Transient response has improved in comparison to the existing series. SOT89, SOT23-3 and SOT23-5 packages are available.
TX78XXM Features:
Low voltage drop: 0.23V@100mA
High input voltage: 15V
Low temperature coefficient
Large Output Current: >0.5A
Low Quiescent Current: 2.0uA
Output voltage accuracy: tolerance ±2%
Built-in current limiter
SOT89,SOT23-3 and SOT23-5 packages
TX78XXM Applications:
Battery-powered equipment
Hand-Hold Equipment
GRS Receivers
Wireless LAN
TX78XXM Selection Table:
|
Part No.
|
Output Voltage
|
Package
|
Marking
|
|
TX7818Mxx
|
1.8V
|
SOT89
SOT23-3
SOT23-5
|
Refer to Marking rule
|
|
TX7828Mxx
|
2.8V
|
||
|
TX7830Mxx
|
3.0V
|
||
|
TX7833Mxx
|
3.3V
|
||
|
TX7836Mxx
|
3.6V
|
||
|
TX7840Mxx
|
4.0V
|
||
|
TX7845Mxx
|
4.5V
|
||
|
TX7850Mxx
|
5.0V
|
TX78XXM Order Information:
TX78①②③④⑤
|
Designator
|
Symbol
|
Description
|
|
①②
|
Integer
|
Output Voltage(1.5~5.0V)
|
|
③
|
M
|
Standard
|
|
④
|
P
|
Package:SOT89
|
|
M
|
Package:SOT23-3
|
|
|
M5
|
Package:SOT23-5
|
|
|
⑤
|
R
|
RoHS/Pb Free
|
|
G
|
Halogen Free
|
TX78XXM Block Diagram:
TX78XXM Pin Assignment:
TX78XXM Typical Application:
Note1: Cin=Cout=10uF. (10uF Electrolytic capacitor is recommended).
Note2: If the input and output capacitors are ceramic, add a resistor at the input, as follows.
Note: Re=(1.2~1.8)Ω.
Note1:Input capacitor CIN=10uF.
Note2:Ouput capacitor COUT=10uF/6.8uF(1uF Tantalum capacitor or 6.8uF ceramic capacitor is
recommended).
Note3:The CE port is recommended to connect the current limiting resistor Re. The recommended
resistance is 10K~47K. When the input voltage is larger than or equal to 12V, it is recommended to add a 0.01uF capacitor Ce.
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