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LM26480 Arkusz danych(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numer części LM26480
Szczegółowy opis  Externally Programmable Dual High-Current Step-Down DC/DC and Dual Linear Regulators
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM26480 Arkusz danych(HTML) 1 Page - National Semiconductor (TI)

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LM26480
March 29, 2010
Externally Programmable Dual High-Current Step-Down
DC/DC and Dual Linear Regulators
General Description
The LM26480 is a multi-functional Power Management Unit,
optimized for low-power digital applications. This device inte-
grates two highly efficient 1.5A step-down DC/DC converters
and two 300 mA linear regulators. The LM26480 is offered in
a tiny 4 x 4 x 0.8mm LLP-24 pin package.
Key Specifications
Step-Down DC/DC Converter (Buck)
1.5A output current
V
OUT from:
— Buck1 : 0.8V–2.0V @ 1.5A
— Buck2 : 1.0V–3.3V @ 1.5A
Up to 96% efficiency
±3% FB voltage accuracy
2 MHz PWM switching frequency
PWM - PFM automatic mode change under low loads
Automatic soft start
Linear Regulators (LDO)
V
OUT of 1.0V–3.5V
±3% FB voltage accuracy
300 mA output current
25 mV (typ) dropout
Features
Compatible with advanced applications processors and
FPGAs
2 LDOs for powering Internal processor functions and I/Os
Precision internal reference
Thermal overload protection
Current overload protection
24-lead 4 × 4 × 0.8mm LLP package
External Power-On-Reset function for Buck1 and Buck2
Undervoltage lock-out detector to monitor input supply
voltage
Applications
Core digital power
Applications processors
Peripheral I/O power
Typical Application Circuit
30040401
© 2010 National Semiconductor Corporation
300404
www.national.com


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