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LM3204

Features: 2MHz (typ.) PWM Switching FrequencyOperates from a single Li-Ion cell (2.7V to 5.5V)Adjustable Output Voltage (0.8V to 3.6V)Fast Turn on time when Enabled (50s Typ.), 3GPP Compliant300mA Maximum load capability (PWM mode)500mA Maximum load capability (Bypass mode)PWM, Forced and Automati...

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SeekIC No. : 004395220 Detail

LM3204: Features: 2MHz (typ.) PWM Switching FrequencyOperates from a single Li-Ion cell (2.7V to 5.5V)Adjustable Output Voltage (0.8V to 3.6V)Fast Turn on time when Enabled (50s Typ.), 3GPP Compliant300mA M...

LM3204 Data Sheet

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Part Number:
LM3204
Supply Ability:
5000

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

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Product Details

Description



Features:

 2MHz (typ.) PWM Switching Frequency
 Operates from a single Li-Ion cell (2.7V to 5.5V)
 Adjustable Output Voltage (0.8V to 3.6V)
 Fast Turn on time when Enabled (50s Typ.), 3GPP Compliant
 300mA Maximum load capability (PWM mode)
 500mA Maximum load capability (Bypass mode)
 PWM, Forced and Automatic Bypass Mode
 High Efficiency (96% Typ. at 3.6VIN, 3.2VOUT at 120mA)
 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

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°C
Storage Temperature Range ..................−65°C to +150°C
Maximum Lead Temperature
  (Soldering, 10 sec.) ..............................................+260°C
ESD Rating (Note 4)
Human Body Model.....................................................2.0kV
Machine Model.............................................................200V




Description

The LM3204 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 an adjustable 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 LM3204 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. LM3204 has both forced and automatic bypass modes. Shutdown mode turns the device off and reduces battery consumption to 0.1A (typ.).

The LM3204 is available in a 10-pin lead free micro SMD package. A high switching frequency (2MHz) 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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