RC1117S285T Fairchild Semiconductor, RC1117S285T Datasheet

IC REG LDO 2.85V 1A SOT-223

RC1117S285T

Manufacturer Part Number
RC1117S285T
Description
IC REG LDO 2.85V 1A SOT-223
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of RC1117S285T

Regulator Topology
Positive Fixed
Voltage - Output
2.85V
Voltage - Input
Up to 7.5V
Voltage - Dropout (typical)
1.1V @ 1A
Number Of Regulators
1
Current - Output
1A
Current - Limit (min)
1.1A
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-223 (3 leads + Tab), SC-73, TO-261
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
RC1117S285TTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
RC1117S285T
Manufacturer:
Fairchild
Quantity:
455
Part Number:
RC1117S285T
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Features
• Low dropout voltage
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Standard SOT-223, TO-263, and TO-252 packages
• Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V
Applications
• Active SCSI terminators
• High efficiency linear regulators
• Post regulators for switching supplies
• Battery chargers
• 5V to 3.3V linear regulators
• Motherboard clock supplies
Typical Applications
RC1117
1A Adjustable/Fixed Low Dropout Linear Regulator
V
IN
V
V
= 3.3V
OUT
IN
= 5V
= V
REF
10 F
10 F
(1 + R2/R1) + I
+
+
Adj
V
• R2
IN
V
IN
RC1117-2.85
RC1117
ADJ
GND
V
OUT
V
Description
The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low
dropout three-terminal regulators with 1A output current
capability. These devices have been optimized for low voltage
where transient response and minimum input voltage are
critical. The 2.85V version is designed specifically to be
used in Active Terminators for SCSI bus.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limiting
provides protection against any combination of overload and
ambient temperatures that would create excessive junction
temperatures.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent current
of the RC1117 flows into the load, increasing efficiency.
The RC1117 series regulators are available in the industry-
standard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK)
power packages.
OUT
R1
124
R2
24.9
+
22 F
+
2.85V at 1A
22 F
www.fairchildsemi.com
1.5V at 1A
REV. 1.3.2 10/16/03

Related parts for RC1117S285T

RC1117S285T Summary of contents

Page 1

RC1117 1A Adjustable/Fixed Low Dropout Linear Regulator Features • Low dropout voltage • Load regulation: 0.05% typical • Trimmed current limit • On-chip thermal limiting • Standard SOT-223, TO-263, and TO-252 packages • Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, ...

Page 2

PRODUCT SPECIFICATION Pin Assignments Front View 3 Tab OUT 1 4-Lead Plastic SOT-223 = 15 C/W* JC *With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., 30°C/W to more ...

Page 3

RC1117 Electrical Characteristics Operating Conditions 25°C unless otherwise specified The denotes specifications which apply over the specified operating temperature range. Parameter 3 Reference Voltage, V 1.5V REF 10mA Output Voltage 10mA RC1117-2.5, 4V RC1117-2.85, ...

Page 4

PRODUCT SPECIFICATION Typical Performance Characteristics 1.5 1.4 1.3 1.2 1 1 0.8 0.7 0.6 0 0.2 0.4 0.6 OUTPUT CURRENT (A) Figure 1. Dropout Voltage vs. Output ...

Page 5

RC1117 Typical Performance Characteristics 2.0 1.75 1.5 1.25 1.0 -75 -50 - 100 125 150 175 JUNCTION TEMPERATURE ( C) Figure 7. Short-Circuit Current vs. Temperature REV. 1.3.2 10/16/03 (continued ...

Page 6

PRODUCT SPECIFICATION Mechanical Dimensions 4-Lead SOT-223 Package Inches Millimeters Symbol Min. Max. Min. A — .071 — A1 — .181 — B .025 .033 .640 c — .090 — D .248 .264 6.30 E .130 .148 3.30 e .115 .124 ...

Page 7

RC1117 Mechanical Dimensions 3-Lead TO-252 Package (0.59) 0.89 0.54 0. SEE NOTE D 3 GAGE PLANE 0.61 0. 1.78 1.40 2.90 DETAIL A (ROTATED –90 SCALE 12X REV. 1.3.2 10/16/03 A ...

Page 8

PRODUCT SPECIFICATION Mechanical Dimensions 3-Lead TO-263 Package Inches Millimeters Symbol Min. Max. Min. A .160 .190 4.06 b .020 .036 0.51 b2 .049 .051 1.25 c2 .045 .055 1.14 D .340 .380 8.64 E .380 .405 9.65 e .100 BSC ...

Page 9

... Adjustable RC1117ST Adjustable RC1117D25T 2.5 volt RC1117M25 2.5 volt RC1117M25T 2.5 volt RC1117S25T 2.5 volt RC1117M285 2.85 volt RC1117M285T 2.85 volt RC1117S285T 2.85 volt RC1117D33T 3.3 volt RC1117M33 3.3 volt RC1117M33T 3.3 volt RC1117S33T 3.3 volt RC1117D5T 5 volt RC1117M5 5 volt RC1117M5T ...

Related keywords