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L5970AD

Switching Converters, Regulators & Controllers 4.4-36V 1A Step-Down

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SeekIC No. : 00586057 Detail

L5970AD: Switching Converters, Regulators & Controllers 4.4-36V 1A Step-Down

L5970AD Data Sheet

floor Price/Ceiling Price

US $ .83~.84 / Piece | Get Latest Price
Part Number:
L5970AD
Mfg:
STMicroelectronics
Supply Ability:
5000

Price Break

  • Qty
  • 0~1610
  • 1610~2000
  • Unit Price
  • $.84
  • $.83
  • Processing time
  • 15 Days
  • 15 Days
View more price & deliveries
Total Cost: $ 0.00

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Product Details

Quick Details

Output Voltage : 35 V Operating Temperature Range : - 40 C to + 150 C
Mounting Style : SMD/SMT Package / Case : SO-8
Packaging : Tube    

Description

Output Current :
Output Power :
Input Voltage :
Switching Frequency :
Mounting Style : SMD/SMT
Packaging : Tube
Package / Case : SO-8
Operating Temperature Range : - 40 C to + 150 C
Output Voltage : 35 V


Features:

·1.5A INTERNAL SWITCH
·OPERATING INPUT VOLTAGE FROM 4.4V TO
·36V 3.3V / (2%) REFERENCE VOLTAGE
·OUTPUT VOLTAGE ADJUSTABLE FROM   1.235V TO 35V
·LOW DROPOUT OPERATION: 100% DUTY CYCLE
·500KHz INTERNALLY FIXED FREQUENCY VOLTAGE FEEDFORWARD
·ZERO LOAD CURRENT OPERATION
·INTERNAL CURRENT LIMITING
 ·INHIBIT FOR ZERO CURRENT  CONSUMPTION
·SYNCHRONIZATION
·PROTECTION AGAINST FEEDBACK  DISCONNECTION
·THERMAL SHUTDOWN


Application

·CONSUMER: STB, DVD, TV, VCR,CAR  RADIO, LCD MONITORS
·NETWORKING: XDSL, MODEMS,DC-DC  MODULES COMPUTER: PRINTERS, AUDIO/GRAPHIC
·CARDS, OPTICAL STORAGE, HARD DISK  DRIVE
·INDUSTRIAL: CHARGERS, CAR BATTERY  DC-DC CONVERTERS


Pinout

Connection Diagram


Specifications


Symbol
 Parameter
Value
Unit
V8
 Input Voltage
40
V
V1
 Output DC voltage
Output peak voltage at t = 0.1s
-1 to 40
-5 to 40
V
V
I1
 Maximum output current
int. limit.
V4,V5
 Analog pins
4
V
V3
 INH
-0.3V to VCC
V2
 SYNC
-0.3 to 4
V
Ptot
 Power dissipation at Tamb 60
0.7
W
Tj
 Operating junction temperature range
-40 to 150
Tstg
 Storage temperature range
-55 to 150



Description

The L5970AD is a step down monolithic power witching regulator with a switch current limit of 1.5A o it is able to deliver more than 1A DC current to the load depending on the application conditions.

The output voltage can be set from 1.235V to 35V. L5970AD  uses an internal P-Channel D-MOS tran- sistor (with a typical RDSON  of 200m) as switching


element to avoid the use of bootstrap capacitor and guarantee high efficiency.

An internal oscillator fixes the switching frequency at 500KHz to minimize the size of external components. Having a minimum input voltage of 4.4V only, it is particularly suitable for 5V bus, available in all com- puter related applications.
 
Pulse by pulse current limit with the internal frequen- cy modulation offers an effective constant current  short circuit protection.




Parameters:

Technical/Catalog InformationL5970AD
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
TypeStep-Down (Buck)
Number of Outputs1
Voltage - Input4.4 ~ 36 V
Voltage - Output1.24 ~ 35 V
Current - Output1.5A
Power - Output750mW
Package / Case8-SOIC (3.9mm Width)
PackagingTube
Internal Switch(s)Yes
SynchronousNo
Rds (On)200 mOhm
Operating Temperature-40°C ~ 150°C
Frequency - Switching500kHz
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L5970AD
L5970AD



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