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Datasheet> All Categories > FAN1537B
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FAN1537B

Description
Dual 1A Adjustable/Fixed Low Dropout Linear Regulators
File Size340KB，8 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
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FAN1537B Overview

Dual 1A Adjustable/Fixed Low Dropout Linear Regulators

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www.fairchildsemi.com
FAN1537
Dual 1A Adjustable/Fixed Low Dropout
Linear Regulators
Features
•
•
•
•
•
•
Low dropout voltage
Load regulation: 0.05% typical
On-chip thermal limiting
SO-8 and 5-lead SPAK and TO-252 DPAK packages
Fixed 3.3V, and adjustable or 2.5V or 1.8V fixed
Stable with low ESR output capacitors
Description
The FAN1537 provides 2 output voltages: 3.3V, and either
adjustable or 2.5V or 1.8V fixed with 1.0A each output
current capability. These devices have been optimized for
low voltage where transient response and minimum input
voltage are critical.
Current limit features protect the outputs against short circuit
currents. On-chip thermal limiting provides protection
against any combination of overload and ambient tempera-
ture that would create excessive junction temperatures.
The FAN1537 series regulators are available in SO-8 and
5-lead SPAK and TO-252 DPAK power packages.
Applications
•
•
•
•
•
•
Hard Disk Drives, CD-ROMs, DVDs
High efficiency linear regulators
Post regulators for switching supplies
ADSL and Cable Modems
5V to 3.3V and 2.5V linear regulators
Motherboard with multiple supplies
Typical Applications
FAN1537A
V1
V
IN
= 5V
+
22µF
NC GND
V
IN
V2
+
22µF
+
22µF
2.5V at 1.0A
3.3V at 1.0A
FAN1537B
V1
V
IN
= 5V
+
22µF
GND
FB
R1
54.9Ω
R2
124Ω
V
IN
V2
+
22µF
+
3.3V at 1.0A
1.8V at 1.0A
22µF
V2 = V
REF
(1 + R1/R2)
REV. 1.1.1 3/20/02

FAN1537B Related Products

FAN1537B FAN1537DA FAN1537MA FAN1537PA FAN1537DB FAN1537DC FAN1537MB FAN1537MC FAN1537PB FAN1537PC
Description Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators Dual 1A Adjustable/Fixed Low Dropout Linear Regulators
Is it Rohs certified? - incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible
Parts packaging code - TO-252 SOIC MODULE TO-252 TO-252 SOIC SOIC MODULE MODULE
package instruction - TO-252, SMSIP5H,.37,50TB SOP, SOP8,.25 TO-263, SMSIP5H,.41,67TB TO-252, SMSIP5H,.37,50TB PLASTIC, TO-252, DPAK-5 SOP, SOP8,.25 PLASTIC, SOIC-8 TO-252, SMSIP5H,.41,67TB SPAK-5
Contacts - 3 8 5 3 3 8 8 5 5
Reach Compliance Code - unknow compli compli compli unknow compli compli compli compli
ECCN code - EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Adjustability - FIXED FIXED FIXED FIXED/ADJUSTABLE - FIXED/ADJUSTABLE - FIXED/ADJUSTABLE -
Maximum drop-back voltage 1 - 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V
Nominal dropback voltage 1 - 1.1 V 1.1 V 1.1 V 1.1 V 1.1 V 1.1 V 1.1 V 1.1 V 1.1 V
Maximum absolute input voltage - 10 V 10 V 10 V 10 V 10 V 10 V 10 V 10 V 10 V
Maximum input voltage - 7 V 7 V 7 V - 7 V - 7 V - 7 V
Minimum input voltage - 4.75 V 4.75 V 4.75 V - 4.75 V - 4.75 V - 4.75 V
JESD-30 code - R-PSSO-G4 R-PDSO-G8 R-PSSO-G5 R-PSSO-G4 R-PSSO-G4 R-PDSO-G8 R-PDSO-G8 R-PSSO-G5 R-PSSO-G5
JESD-609 code - e0 e0 e0 e0 e0 e0 e0 e0 e0
length - 6.575 mm 4.9 mm 9.395 mm 6.575 mm 6.575 mm 4.9 mm 4.9 mm 9.395 mm 9.395 mm
Maximum grid adjustment rate - 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165%
Maximum load regulation - 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165% 0.0165%
Number of functions - 1 1 1 1 1 1 1 1 1
Output times - 2 2 2 2 2 2 2 2 2
Number of terminals - 4 8 5 4 4 8 8 5 5
Working temperatureTJ-Max - 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C
Maximum output current 1 - 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
Maximum output current 2 - 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
Maximum output voltage 1 - 3.4 V 3.4 V 3.4 V 3.4 V 3.4 V 3.4 V 3.4 V 3.4 V 3.4 V
Minimum output voltage 1 - 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V
Nominal output voltage 1 - 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
Maximum output voltage 2 - 2.58 V 2.58 V 2.58 V 8.7 V 1.858 V 8.7 V 1.858 V 8.7 V 1.858 V
Minimum output voltage 2 - 2.42 V 2.42 V 2.42 V 2.5 V 1.742 V 2.5 V 1.742 V 2.5 V 1.742 V
Nominal output voltage 2 - 2.5 V 2.5 V 2.5 V - 1.8 V - 1.8 V - 1.8 V
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - TO-252 SOP TO-263 TO-252 TO-252 SOP SOP TO-252 TO-263
Encapsulate equivalent code - SMSIP5H,.37,50TB SOP8,.25 SMSIP5H,.41,67TB SMSIP5H,.37,50TB SMSIP5H,.37,50TB SOP8,.25 SOP8,.25 SMSIP5H,.41,67TB SMSIP5H,.41,67TB
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Regulator type - FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED/ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED/ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED/ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR
Maximum seat height - 2.53 mm 1.75 mm 2.16 mm 2.53 mm 2.53 mm 1.75 mm 1.75 mm 2.16 mm 2.16 mm
surface mount - YES YES YES YES YES YES YES YES YES
technology - BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch - 1.27 mm 1.27 mm 1.72 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.72 mm 1.72 mm
Terminal location - SINGLE DUAL SINGLE SINGLE SINGLE DUAL DUAL SINGLE SINGLE
Maximum time at peak reflow temperature - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Maximum voltage tolerance - 3% 3% 3% - 3% - 3% - 3%
width - 6.1 mm 3.9 mm 8 mm 6.1 mm 6.1 mm 3.9 mm 3.9 mm 8 mm 8 mm

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