FAN1537 Fairchild Semiconductor, FAN1537 Datasheet
FAN1537
Manufacturer Part Number
FAN1537
Description
Dual 1A Adjustable/Fixed Low Dropout Linear Regulators
Manufacturer
Fairchild Semiconductor
Datasheet
1.FAN1537.pdf
(8 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
FAN1537PA
Manufacturer:
FAIRCHILD
Quantity:
30 401
Part Number:
FAN1537PAC
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Company:
Part Number:
FAN1537PB
Manufacturer:
FAIRCHILD
Quantity:
5 000
Company:
Part Number:
FAN1537PBC
Manufacturer:
FAIRCHILD
Quantity:
40 000
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
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
FAN1537
Dual 1A Adjustable/Fixed Low Dropout
Linear Regulators
V
V
IN
IN
= 5V
= 5V
22 F
22 F
+
+
NC GND
V
V
IN
IN
FAN1537A
FAN1537B
GND
V2 = V
FB
V1
V2
V1
V2
REF
(1 + R1/R2)
+
+
R1
54.9
R2
124
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.
22 F
22 F
+
+
+
+
22 F
22 F
22 F
22 F
3.3V at 1.0A
3.3V at 1.0A
2.5V at 1.0A
2.5V at 1.0A
+
+
22 F
22 F
3.3V at 1.0A
3.3V at 1.0A
1.8V at 1.0A
www.fairchildsemi.com
REV. 1.1.1 3/20/02
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