LMR33630 SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI | TI.com

LMR33630 (ACTIVE)

SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI

 

Description

The LMR33630 SIMPLE SWITCHER® regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33630 drives up to 3 A of load current from an input of up to 36 V. The LMR33630 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33630 automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33630 is available in an 8-pin HSOIC package and in a 12-pin 3 mm × 2 mm VQFN package with wettable flanks. This device is also available in an AEC-Q100-qualified version.

Features

  • Configured for rugged industrial applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Output current: 3 A
    • 75-mΩ/50-mΩ RDS-ON power MOSFETs
    • Peak-current-mode control
    • Short minimum on-time of 68 ns
    • Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
    • Junction temperature range –40°C to +125°C
    • Low EMI and low switching noise
    • Integrated compensation network
  • High-efficiency solution
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 25 µA
  • Flexible system interface
    • Power-good flag and precision enable
  • Create a custom design using the LMR33630 with the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

WEBENCH ® Designer LMR33630

Topology
Product Option
  Min   Max Range
Vin -  V 3.8 to 36V
Vout  V 1 to 24V
Iout  A ≤ 3A
Ambient Temp   °C -40 to 125 °C

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
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)
LMR33630 Order now 3.8     36     1     34     3     1     400     2100     0.024     Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8
VQFN-HR | 12    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
12VQFN-HR: 6 mm2: 3 x 2 (VQFN-HR | 12)    
LM43602 Order now 3.5     36     1     28     2     1     200     2200     0.027     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Current Mode     99     -40 to 125     Catalog     HTSSOP | 16
SON | 16    
Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
See datasheet (SON)    
LM43603 Order now 3.5     36     1     28     3     1     200     2200     0.027     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Synchronous Rectification
Tracking    
Current Mode     99     -40 to 125     Catalog     HTSSOP | 16
SON | 16    
Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
See datasheet (SON)    
LMR14030 Order now 4     40     1     36     3.5     1     200     2500     0.04     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
LMR23630 Order now 4.5     36     1     30     3     1     200     2200     0.075     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Wettable Flanks Package    
Current Mode