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LM3200

Features: ·2 MHz (typ.) PWM Switching Frequency·Operates from a single Li-Ion cell (2.7V to 5.5V)·Variable Output Voltage (0.8V to 3.6V)· 300 mA Maximum load capability (PWM mode)·500 mA Maximum load capability (Bypass mode)·PWM, Forced and Automatic Bypass Mode·High Efficiency (96% Typ at 3.6VIN,...

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SeekIC No. : 004395214 Detail

LM3200: Features: ·2 MHz (typ.) PWM Switching Frequency·Operates from a single Li-Ion cell (2.7V to 5.5V)·Variable Output Voltage (0.8V to 3.6V)· 300 mA Maximum load capability (PWM mode)·500 mA Maximum loa...

LM3200 Data Sheet

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Part Number:
LM3200
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·2 MHz (typ.) PWM Switching Frequency
·Operates from a single Li-Ion cell (2.7V to 5.5V)
·Variable Output Voltage (0.8V to 3.6V)
· 300 mA Maximum load capability (PWM mode)
·500 mA Maximum load capability (Bypass mode)
·PWM, Forced and Automatic Bypass Mode
·High Efficiency (96% Typ at 3.6VIN, 3.2VOUT at 120 mA) from internal synchronous rectification
·10-pin micro SMD Package
·Current Overload Protection
·Thermal Overload Protection


Application

·Cellular Phones
·Hand-Held Radios
·RF PC Cards
·Battery Powered RF Devices


Pinout

Connection Diagram


Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VDD, PVIN to SGND ................................−0.2V to +6.0V
PGND to SGND .......................................−0.2V to +0.2V
EN, FB, BYP, VCON ....................................(SGND −0.2V)
                             ...................................to (VDD +0.2V)
w/6.0V max
SW, BYPOUT .............................................(PGND −0.2V)
                    ..........................................(to (PVIN +0.2V)
w/6.0V max
PVIN to VDD ...........................................−0.2V to +0.2V
Continuous Power Dissipation
(Note 3) Internally Limited
Junction Temperature (TJ-MAX)...........................  +150
Storage Temperature Range................. −65 to +150
Maximum Lead Temperature
(Soldering, 10 sec) .............................................. +260
ESD Rating (Note 4)
Human Body Model: All other pins..........................2.0 kV
Human Body Model: PVIN pin................................ 1.0 kV
Machine Model: All pins........................................... 200V




Description

The LM3200 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage of 2.7V to 5.5V to a variable output voltage of 0.8V to 3.6V. The output voltage is set using an analog input ( VCON) for optimizing efficiency of the RF PA at various power levels.

The LM3200 offers superior features and performance for mobile phones and similar RF PA applications. Fixedfrequency PWM mode minimizes RF interference. Bypass mode turns on an internal bypass switch to power the PA directly from the battery. LM3200 has both forced and automatic bypass modes. Shutdown mode turns the device off and reduces battery consumption to 0.1 A (typ.). The LM3200 is available in a 10-pin lead free micro SMD package.
A high switching frequency (2 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required.




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