Technical Document
Specifications
Brand
Texas InstrumentsMaximum Output Current
1.5A
Regulator Function
Buck Controller, Inverting
Minimum Input Voltage
6 V
Maximum Input Voltage
75 V
Output Type
Adjustable
Mounting Type
Surface Mount
Number of Outputs
1
Pin Count
16
Maximum Switching Frequency
500 kHz
Package Type
TSSOP
Switching Regulator
Yes
Dimensions
5 x 4.4 x 0.9mm
Maximum Operating Temperature
+125 °C
Length
5mm
Minimum Operating Temperature
-40 °C
Height
0.9mm
Width
4.4mm
Country of Origin
United Kingdom
Product details
SIMPLE SWITCHER® Step-Down Regulators, LM557x & LM2557x Series
The LM557x and LM2557x are easy to use high-performance SIMPLE SWITCHER® buck regulators which allow design engineers to design and optimize a robust power supply using a minimum set of components.
Integrated N-channel MOSFET
Ultra-Wide Input Voltage Range up to 42V/75V
Emulated current mode for fast transient response
Adjustable Output Voltage as Low as 1.225V
1.5% Feedback Reference Accuracy
Operating frequency adjustable between 50kHz and 500kHz with single resistor
Adjustable soft-start
SIMPLE SWITCHER® Regulators, Texas Instruments
Use for wide voltage inputs designs up to 75V, and a balance between ease of use and flexibility.
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P.O.A.
92
P.O.A.
92
Technical Document
Specifications
Brand
Texas InstrumentsMaximum Output Current
1.5A
Regulator Function
Buck Controller, Inverting
Minimum Input Voltage
6 V
Maximum Input Voltage
75 V
Output Type
Adjustable
Mounting Type
Surface Mount
Number of Outputs
1
Pin Count
16
Maximum Switching Frequency
500 kHz
Package Type
TSSOP
Switching Regulator
Yes
Dimensions
5 x 4.4 x 0.9mm
Maximum Operating Temperature
+125 °C
Length
5mm
Minimum Operating Temperature
-40 °C
Height
0.9mm
Width
4.4mm
Country of Origin
United Kingdom
Product details
SIMPLE SWITCHER® Step-Down Regulators, LM557x & LM2557x Series
The LM557x and LM2557x are easy to use high-performance SIMPLE SWITCHER® buck regulators which allow design engineers to design and optimize a robust power supply using a minimum set of components.
Integrated N-channel MOSFET
Ultra-Wide Input Voltage Range up to 42V/75V
Emulated current mode for fast transient response
Adjustable Output Voltage as Low as 1.225V
1.5% Feedback Reference Accuracy
Operating frequency adjustable between 50kHz and 500kHz with single resistor
Adjustable soft-start
SIMPLE SWITCHER® Regulators, Texas Instruments
Use for wide voltage inputs designs up to 75V, and a balance between ease of use and flexibility.