Datasheet LT1584, LT1585, LT1587 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| Seiten / Seite | 16 / 1 — FEATURES. DESCRIPTIO. Fast Transient Response. Guaranteed Dropout Voltage … |
| Dateiformat / Größe | PDF / 226 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTIO. Fast Transient Response. Guaranteed Dropout Voltage at Multiple Currents. APPLICATIO S. TYPICAL APPLICATIO
Modelllinie für dieses Datenblatt
- LT1584CT#PBF LT1584CT#PBF LT1584CT-3.3#PBF LT1584CT-3.3#PBF LT1584CT-3.38#PBF LT1584CT-3.38#PBF LT1584CT-3.45#PBF LT1584CT-3.45#PBF LT1584CT-3.6#PBF LT1584CT-3.6#PBF LT1584IT-3.3#PBF LT1584IT-3.3#PBF
- LT1585CM#PBF LT1585CM#PBF LT1585CM#TRPBF LT1585CM#TRPBF LT1585CM-3.3#PBF LT1585CM-3.3#PBF LT1585CM-3.3#TRPBF LT1585CM-3.3#TRPBF LT1585CM-3.38#PBF LT1585CM-3.38#PBF LT1585CM-3.45#PBF LT1585CM-3.45#PBF LT1585CM-3.45#TRPBF LT1585CM-3.45#TRPBF LT1585CM-3.6#PBF LT1585CM-3.6#PBF LT1585CT#PBF LT1585CT#PBF LT1585CT-3.3#PBF LT1585CT-3.3#PBF LT1585CT-3.38#PBF LT1585CT-3.38#PBF LT1585CT-3.45#PBF LT1585CT-3.45#PBF LT1585CT-3.6#PBF LT1585CT-3.6#PBF
- LT1587CM#PBF LT1587CM#PBF LT1587CM#TRPBF LT1587CM#TRPBF LT1587CM-3.3#PBF LT1587CM-3.3#PBF LT1587CM-3.3#TRPBF LT1587CM-3.3#TRPBF LT1587CM-3.45#PBF LT1587CM-3.45#PBF LT1587CM-3.45#TRPBF LT1587CM-3.45#TRPBF LT1587CM-3.6#PBF LT1587CM-3.6#PBF LT1587CM-3.6#TRPBF LT1587CM-3.6#TRPBF LT1587CT#PBF LT1587CT#PBF LT1587CT-3.3#PBF LT1587CT-3.3#PBF LT1587CT-3.45#PBF LT1587CT-3.45#PBF LT1587CT-3.6#PBF LT1587CT-3.6#PBF
Textversion des Dokuments
LT1584/LT1585/LT1587 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed
U FEATURES DESCRIPTIO
■
Fast Transient Response
The LT®1584/LT1585/LT1587 are low dropout three- ■
Guaranteed Dropout Voltage at Multiple Currents
terminal regulators with 7A, 4.6A and 3A output current ■ Load Regulation: 0.05% Typical capability, respectively. Design has been optimized for low ■ Trimmed Current Limit voltage applications where transient response and mini- ■ On-Chip Thermal Limiting mum input voltage are critical. Similar to the LT1083/4/5 ■ Standard 3-Pin Power Package family, it has lower dropout voltage and faster transient
U
response. These improvements make it ideal for low volt-
APPLICATIO S
age microprocessor applications requiring a regulated 2.5V to 3.6V output with an input supply below 7V. ■ PentiumTM Processor Supplies ■ Current limit is trimmed to ensure specified output current PowerPCTM Supplies ■ and controlled short-circuit current. On-chip thermal lim- Other 2.5V to 3.6V Microprocessor Supplies ■ iting provides protection against any combination of over- Low Voltage Logic Supplies ■ load that would create excessive junction temperatures. Battery-Powered Circuitry ■ Post Regulator for Switching Supply The LT1585/LT1587 are available in both the through-hole and surface mount versions of the industry standard 3-pin LT1585/7CM, LT1584/5/7CT Adjustable TO-220 power package. The LT1584 is available in the LT1585/7CM-3.3, LT1584/5/7CT-3.3 3.3V Fixed through-hole 3-pin TO-220 power package. LT1585CM-3.38, LT1584/5CT-3.38 3.38V Fixed , LTC and LT are registered trademarks of Linear Technology Corporation. LT1585/7CM-3.45, LT1584/5/7CT-3.45 3.45V Fixed Pentium is a trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation. LT1585/7CM-3.6, LT1584/5/7CT-3.6 3.6V Fixed
U TYPICAL APPLICATIO Dropout Voltage vs Output Current
1.5
3.3V, 7A, 4.6A, 3A Regulator
1.4 1.3 LT1584-3.3 3.3V 1.2 V LT1585-3.3 IN ≥ 4.75V 7A, 4.6A, 3A LT1587-3.3 + + 1.1 C1 C2* 10µF SOLID 1.0 TANTALUM 0.9 0.8 * REQUIRED FOR STABILITY LT1584: C2 = 22µF, 0.7 1585 TA01 LT1585/LT1587: C2 = 10µF INPUT/OUTPUT DIFFERENTIAL (V) 0.6 NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE OUTPUT DECOUPLING CAPACITANCE > 1300µF ON FIXED VOLTAGE PARTS TO ACHIEVE 0.5 < 50mV OF DEVIATION FROM NOMINAL OUTPUT. CONSULT FACTORY FOR DETAILS 0 IFULL LOAD OUTPUT CURRENT (A) 1585 TA02 158457a 1
U FEATURES DESCRIPTIO
■
Fast Transient Response
The LT®1584/LT1585/LT1587 are low dropout three- ■
Guaranteed Dropout Voltage at Multiple Currents
terminal regulators with 7A, 4.6A and 3A output current ■ Load Regulation: 0.05% Typical capability, respectively. Design has been optimized for low ■ Trimmed Current Limit voltage applications where transient response and mini- ■ On-Chip Thermal Limiting mum input voltage are critical. Similar to the LT1083/4/5 ■ Standard 3-Pin Power Package family, it has lower dropout voltage and faster transient
U
response. These improvements make it ideal for low volt-
APPLICATIO S
age microprocessor applications requiring a regulated 2.5V to 3.6V output with an input supply below 7V. ■ PentiumTM Processor Supplies ■ Current limit is trimmed to ensure specified output current PowerPCTM Supplies ■ and controlled short-circuit current. On-chip thermal lim- Other 2.5V to 3.6V Microprocessor Supplies ■ iting provides protection against any combination of over- Low Voltage Logic Supplies ■ load that would create excessive junction temperatures. Battery-Powered Circuitry ■ Post Regulator for Switching Supply The LT1585/LT1587 are available in both the through-hole and surface mount versions of the industry standard 3-pin LT1585/7CM, LT1584/5/7CT Adjustable TO-220 power package. The LT1584 is available in the LT1585/7CM-3.3, LT1584/5/7CT-3.3 3.3V Fixed through-hole 3-pin TO-220 power package. LT1585CM-3.38, LT1584/5CT-3.38 3.38V Fixed , LTC and LT are registered trademarks of Linear Technology Corporation. LT1585/7CM-3.45, LT1584/5/7CT-3.45 3.45V Fixed Pentium is a trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation. LT1585/7CM-3.6, LT1584/5/7CT-3.6 3.6V Fixed
U TYPICAL APPLICATIO Dropout Voltage vs Output Current
1.5
3.3V, 7A, 4.6A, 3A Regulator
1.4 1.3 LT1584-3.3 3.3V 1.2 V LT1585-3.3 IN ≥ 4.75V 7A, 4.6A, 3A LT1587-3.3 + + 1.1 C1 C2* 10µF SOLID 1.0 TANTALUM 0.9 0.8 * REQUIRED FOR STABILITY LT1584: C2 = 22µF, 0.7 1585 TA01 LT1585/LT1587: C2 = 10µF INPUT/OUTPUT DIFFERENTIAL (V) 0.6 NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE OUTPUT DECOUPLING CAPACITANCE > 1300µF ON FIXED VOLTAGE PARTS TO ACHIEVE 0.5 < 50mV OF DEVIATION FROM NOMINAL OUTPUT. CONSULT FACTORY FOR DETAILS 0 IFULL LOAD OUTPUT CURRENT (A) 1585 TA02 158457a 1