SC1592 SEMTECH [Semtech Corporation], SC1592 Datasheet

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SC1592

Manufacturer Part Number
SC1592
Description
Low Dropout High Performance Adjustable Positive Voltage Regulator
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet

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The SC1592 is a 3A low dropout high performance
linear voltage regulator, that provides a low voltage, high
current output with a minimum of external components,
utilizing dual supply configuration.
The SC1592 offers a wide input voltage range from 1.25V
to 16V and is ideal for applications that need to convert
down to 0.8V.
Additionally, the SC1592 is fully protected with an exter-
nally programmable current limit, and thermal shutdown.
Also, there is an EN input which enables or shuts down
the device.
The SC1592 voltage regulator is available in 7-lead DDPAK
and SOIC-8L EDP packages.
Revision: January 27, 2004
Typical Application Circuit
POWER MANAGEMENT
Description
+3.3V Vcntl
+2.5V Vin
1uF
10uF
C1
C2
CNTL
IN
TTL
EN
SC1592
Adjustable Positive Voltage Regulator
GND
1
Features
Applications
SENSE
ILIM
Wide input range, V
3A Guaranteed Output Current
260mV (typ) @ 3A dropout voltage in dual supply
mode
1% Initial Accuracy
Adjustable output voltage, down to 0.8V
Programmable current limiting and thermal
Fast transient response
Excellent line and load regulation
Power SO-8 and 7-lead DDPAK
Low voltage logic supplies
Microprocessor and chipset supplies
Split plane microprocessor supplies
Advanced graphics cards supplies
Sound cards and auxiliary power supplies
SMPS post regulator
shutdown
Low Dropout High Performance
OUT
100
R1
R3
R2
66.5
53
V
IN
CNTL
= 1.25V to 16V,
V
V
OUT
REF
= 3V to 16V
+1.8V Vout
C3
47uF(cer)
0
1 (
8 .
V
R
R
typ
2
3
)
.
SC1592
www.semtech.com
V
REF

Related parts for SC1592

SC1592 Summary of contents

Page 1

... The SC1592 offers a wide input voltage range from 1.25V to 16V and is ideal for applications that need to convert down to 0.8V. Additionally, the SC1592 is fully protected with an exter- nally programmable current limit, and thermal shutdown ...

Page 2

... SC1592 ...

Page 3

... 10% when measuring VOUT. 240 V OUT R LIM 3 SC1592 = T = 25° www.semtech.com ° C ° ...

Page 4

... SC1592 ° ...

Page 5

... Accuracy of the current limit setting is better than ±20% over full operating temperature range. *Internal ESD structure. In cases where EN is permanently tied to V resistor should be inserted in the link between EN and V 2004 Semtech Corp. Figure 1 , it’s recommended that a 10-20k SC1592 www.semtech.com ...

Page 6

... Considering the approximate 2W power being dissipated by the pass element of the SC1592, we are still able to choose an SO-8 EDP package with T 1sq.in. copper pad allocated for adequate heat transfer. The ambient temperature in this case should not exceed 50° ...

Page 7

... POWER MANAGEMENT Typical Characteristics 2004 Semtech Corp. Load Transient Reponse I step : rate /uS Time (2ms/div) I step : rate /uS Time (200us/div) 7 SC1592 1.8V OUT V = 3.3V CNTL C = 22uF 100uF OUT 1.8V OUT V = 3.3V CNTL ...

Page 8

... POWER MANAGEMENT Typical Characteristics (Cont.) 2.00 1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 2 1.95 1.9 1.85 1.8 1.75 1.7 1.65 1.6 1.55 1.5 2004 Semtech Corp. Load Regulation V = 3.3V CNTL V = 2.5V IN 0.0 0.5 1.0 1.5 2.0 OUTPUT CURRENT (A) Output Voltage vs. Tem perature V = 3.3V CNTL 10mA OUT -40 - TEMPERATURE ( SC1592 2.5 3.0 80 100 120 www.semtech.com ...

Page 9

... POWER MANAGEMENT Typical Characteristics (Cont.) 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 -40 2004 Semtech Corp. EnableThreshold vs. Temperature V = 3.3V CNTL 1.8V OUT I = 10mA OUT - TEMPERATURE ( SC1592 100 120 www.semtech.com ...

Page 10

... POWER MANAGEMENT Typical Characteristics (Cont.) 1.1 1.0 0.9 0.8 0.50 0.40 0.30 0.20 0.10 0.00 2004 Semtech Corp. Dropout Voltage (Control Supply) INITIAL V = 3.3V CNTL 1.8V OUT OUTPUT CURRENT (A) Dropout Voltage (Input Supply 3.3V CNTL INITIAL 1.8V OUT OUTPUT CURRENT (A) 10 SC1592 3 3 www.semtech.com ...

Page 11

... Semtech Corp. Contol Current vs. Tem perature (In Shutdow n) 1 -40 - TEMPERATURE ( o C) Control Current vs Tem perature (In Regulation) 100 10 1 -40 - TEMPERATURE ( o 11 SC1592 V = 3.3V CNTL 10mA OUT 80 100 120 OUT OUT OUT V = 3.3V CNTL ...

Page 12

... Semtech Corp. Dropout Voltage vs. Temperature ( CNTL OUT INITIAL 2. 1.8v OUT OUT - TEMPERATURE ( o C) Dropout Voltage vs. Tem perature ( OUT OUT V = 3.3V CNTL INITIAL V OUT V = 1.8v OUT -40 - TEMPERATURE ( SC1592 = 3.3V CNTL 110 = 2. 100 120 www.semtech.com ...

Page 13

... Semtech Corp. 47uF ESR vs. Iout 1 Stable Area 0 0.5 1 1.5 2 OUTPUT CURRENT (A) 150uF ESR vs. Iout 10 1 0.1 Stable Area 0 0.5 1 1.5 OUTPUT CURRENT (A) 330uF ESR vs. Iout 10 1 0.1 Stable Area 0 0.5 1 1.5 OUTPUT CURRENT (A) 13 SC1592 Unstable Area 2.5 3 Unstable Area 2 2.5 3 Unstable Area 2 2.5 3 www.semtech.com ...

Page 14

... K ± SC1592 +1.8V Vout C3 100uF R2 (cer) 66 ...

Page 15

... POWER MANAGEMENT Evaluation Board - SOIC-8 EDP 2004 Semtech Corp. 15 SC1592 www.semtech.com ...

Page 16

... POWER MANAGEMENT Evaluation Board - TO-263-7L (DDPAK) 2004 Semtech Corp. 16 SC1592 www.semtech.com ...

Page 17

... POWER MANAGEMENT Outline Drawing - SOIC-8L EDP Land Pattern - SOIC-8L EDP 2004 Semtech Corp. 17 SC1592 www.semtech.com ...

Page 18

... POWER MANAGEMENT Outline Drawing - TO-263-7L (DDPAK) Recommended Land Pattern - TO-263-7L (DDPAK) Contact Information 2004 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 18 SC1592 (FOR REFERENCE) www.semtech.com ...

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