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Part: LD1580K5R
Category:
Description: 7A Very Low Drop Voltage Regulator Adjustable And Fixed
Company: ST Microelectronics, Inc.
Datasheet: Download LD1580K5R datasheet File size : 61 kB
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Datasheet text preview:
LD1580
7 A VERY LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
PRELIMINARY DATA
s s
s s s
s
s
s
OUTPUT CURR ENT LIMIT LOW DROPOUT VOLTAGE: TYPICALLY 400mV AT 7A OUTPUT CURRENT OUTPUT VOLTAGE REMOTE SENSE PIN FAST TRAN SIENT RESPONSE THERMAL SHUTDOWN PROTECTION W ITH H YSTERESIS W IDE OPERATING TEMPERATURE RANGE -40°C TO 125°C NO SUPPLY SEQUENCIN G PROBLEMS IN D UAL SUPPLY MODE OUTPUT VOLTAGES AVAILABLE 1.5 V, 1.8V, 2.5 V, 3.0 V, 3.3 V ADJUSTABLE.
HEPTAWATTTM
PENTAWATTTM
5 1
DESCRIPTION The LD1580 is a very low dropout positive linear voltage regulator particularly suitable in applications requiring output currents up to 7 A. The LD1580 typical dropout voltage is 400mV at 7A while it decreases at lighter loads. This very low dropout is achieved thanks to a second input voltage pin, named VCONTROL, which is also responsable of the output power stage driving. The LD1580 is provided with an output voltage remote sense pin which reduces dramatically any SCHEMATIC DIAGRAM
P2PAK
SPAK-5L
SPAK-7L
output voltage variations that could occur due to l oad c hanges . On fixed voltage devices, the ADJ pin is still available. A small capacitor on this pin helps to improve transient response.
November 2002
1/18
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
LD1580
The LD1580 also features a built-in output current limit function and a thermal shutdown protection with hysteresis w hich prevents from excessive power dissipation in case of insufficient AB SOLUTE MAXIMUM RATINGS
Symbol VPOWER IO U T PD Tstg Top DC VPOWER voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range VCONTROL DC VCONTROL voltage Parameter Value from -0.3 to 6 from -0.3 to 13 Internally Limited Internally Limited -55 to +150 -40 to +125 Unit V V A W °C °C
heatsinking. On chip trimming allow s the regulator to reach a very tight output voltage tolerance, within ±2% at the maximum output current and over the full temperature range.
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
THERMA L DATA
Symbol Parameter PENTAWATTTM HEPTAWATTTM 3 50 P2PAK 3 62.5 SPAK-5L SPAK-7L 2 TBD Unit °C/W °C/W
Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient
CONNECTION DIAGRAM (top view)
HEPTAW ATTTM
PENTAW ATTTM
P 2 P AK
SPAK-5L
S P AK-7L
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LD1580
ORDERING CODES
P2PAK (*) PENTAWATT SPAK-5L (*) SPAK-7L (*) LD1580K7-15 LD1580K7-18 LD1580K7-25 LD1580K7-30 LD1580K7-33 LD1580P2T LD1580V5V LD1580K5 HEPTAWATT LD1580V7V15 LD1580V7V18 LD1580V7V25 LD1580V7V30 LD1580V7V33 OUTPUT VOLTAGE 1.5V 1.8V 2.5V 3.0V 3.3V Adjustable
(*) Available in T ape & Reel with the suffix "R" for fixed version and "-R" for adjustable version.
TYPICAL APPLICATION CIRCUITS FOR FIXED VERSION
TYPICAL APPLICATION CIRCUITS FOR ADJUSTABLE VERSION
R2 VO = V REF (1 + ) R1
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