LM2832 High Frequency 2.0A Load - Step-Down DC-DC Regulator | TI.com

LM2832 (ACTIVE)

High Frequency 2.0A Load - Step-Down DC-DC Regulator

 

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Description

The LM2832 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6 Pin WSON and a 8 Pin eMSOP-PowerPAD package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2832 is easy to use. The ability to drive 2.0A loads with an internal 150 mΩ PMOS switch using state-of-the-art 0.5 µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 550 kHz, 1.6 MHz, or 3.0 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30 nA. The LM2832 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection.

Features

  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • 2.0A Output Current
  • High Switching Frequencies
    •  1.6MHz (LM2832X)
    •  0.55MHz (LM2832Y)
    •  3.0MHz (LM2832Z)
  • 150mΩ PMOS Switch
  • 0.6V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Over Voltage Protection

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WEBENCH® Designer LM2832

  Min   Max Range
Vin  V 3.0 to 5.5V
Vout  V 0.6 to 4.5V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM2832 Order now 3     5.5     0.6     4.5     2     1     550     3000     2.8     Enable
Light Load Efficiency    
Current Mode     96     -40 to 125     Catalog     MSOP-PowerPAD | 8
WSON | 6    
Converter     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)
See datasheet (WSON)    
LM2830 Order now 3     5.5     0.6     4.5     1     1     1600     3000     3.3     Enable
Light Load Efficiency    
Current Mode     94     -40 to 125     Catalog     SOT-23 | 5
WSON | 6    
Converter     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
LM2830-Q1 Order now 3     5.5     0.6     4.5     1     1     1600     3000     3.3     Enable
Light Load Efficiency    
Current Mode     94     -40 to 125     Automotive     SOT-23 | 5     Converter     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
LM2831 Order now 3     5.5     0.6     4.5     1.5     1     550     3000     2.8     Enable
Light Load Efficiency    
Current Mode     94     -40 to 125     Catalog     SOT-23 | 5
WSON | 6    
Converter     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
LM2833 Order now 3     5.5     0.6     4.5     3     1     1500     3000     3.2     Enable
Light Load Efficiency    
Current Mode     95     -40 to 125     Catalog     MSOP-PowerPAD | 10
WSON | 10    
Converter