LT1959CR#TRPBF Linear Technology, LT1959CR#TRPBF Datasheet - Page 24

• Manufacturer Part Number: LT1959CR#TRPBF
• Description: IC SW REG STEP-DWN 500KHZ 7-DD
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1959CR#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.21 ~ 38 V
• Current - Output: 4.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.3 ~ 15 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (7 leads + tab)
• Dc To Dc Converter Type: Step Down
• Pin Count: 7 +Tab
• Input Voltage: 16V
• Output Voltage: 1.21 to 2.42V
• Switching Freq: 540kHz
• Output Current: 8.5A
• Package Type: DDPAK
• Output Type: Adjustable
• Switching Regulator: Yes
• Line Regulation: 0.03%/V
• Mounting: Surface Mount
• Input Voltage (min): 4V
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

LT1959
PACKAGE
RELATED PARTS
PART NUMBER
LT1074/LT1076
LTC
LT1370
LT1371
LT1372/LT1377
LT1374
LT1506
LT1624
LT1625
LT1628
LTC1735
LT1775
No R
24
SENSE
®
1148/LTC1149
is a trademark of Linear Technology Corporation
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
(0.203 – 0.254)
**
0.008 – 0.010
*
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
(1.524)
0.060
HATCHED AREA IS SOLDER PLATED
DESCRIPTION
(0.254 – 0.508)
BOTTOM VIEW OF DD PAK
0.010 – 0.020
COPPER HEAT SINK
DESCRIPTION
Step-Down Switching Regulators
High Efficiency Synchronous Step-Down Switching Regulator
High Efficiency DC/DC Converter
High Efficiency DC/DC Converter
500kHz and 1MHz High Efficiency 1.5A Switching Regulators
High Efficiency Step-Down Switching Regulator
High Efficiency Step-Down Switching Regulator
N-Channel Switching Regulator Controller
NoR
2-Phase Synchronous Step-Down Switching Regulator Controller High Efficiency, Low Ripple
High Efficiency Step-Down Converter
High Power NoR
(0.406 – 1.270)
(6.502)
(7.620)
0.016 – 0.050
0.256
0.300
SENSE
45
TM
(1.905)
(1.524)
Step Down-Switching Regulator Controller
0.075
0.060
(4.648)
0.183
SENSE
0 – 8 TYP
U
Switching Regulator Controller
8-Lead Plastic Small Outline (Narrow 0.150)
(1.346 – 1.752)
0.053 – 0.069
Dimensions in inches (millimeters) unless otherwise noted.
(0.355 – 0.483)
(1.524)
0.014 – 0.019
0.060
TYP
3.632
(8.382 – 9.398)
0.143
0.330 – 0.370
TYP
+0.305
–0.508
+0.012
–0.020
7-Lead Plastic DD Pak
(LTC DWG # 05-08-1462)
(LTC DWG # 05-08-1610)
S8 Package
R Package
(0.660 – 0.914)
0.026 – 0.036
(1.270)
0.050
BSC
(0.101 – 0.254)
0.004 – 0.010
(9.906 – 10.541)
0.390 – 0.415
(1.27)
0.050
BSC
15 TYP
(5.791 – 6.197)
0.228 – 0.244
COMMENTS
40V Input, 100kHz, 5A and 2A
External FET Switches
42V, 6A, 500kHz Switch
35V, 3A, 500kHz Switch
Boost Topology
25V, 4.5A, 500kHz Switch
15V, 4.5A, 500kHz Switch
SO-8 Package
Step-Down, Synchronous
Drives External MOSFETs
Step-Down, Synchronous, Current Mode
(4.191 – 4.572)
0.165 – 0.180
(0.330 – 0.584)
0.013 – 0.023
(1.499)
0.059
8
1
TYP
(4.801 – 5.004)
0.189 – 0.197*
7
2
1959fs, sn1959 LT/TP 0500 4K • PRINTED IN
LINEAR TECHNOLOGY CORPORATION 2000
6
3
(1.143 – 1.397)
0.045 – 0.055
0.102
0.004
(2.413 – 2.921)
5
4
0.095 – 0.115
(1.270 0.305)
0.050
+0.203
–0.102
+0.008
–0.004
(3.810 – 3.988)
0.150 – 0.157**
R (DD7) 1098
0.012
SO8 1298
USA