LTC1772BES6 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1772BES6' PDF : 12 Pages View PDF
LTC1772B
TYPICAL APPLICATIONS
R4
10k
C3
220pF
LTC1772B 3.3V to 5V/1A Boost Regulator
R1
VIN
0.033Ω
3.3V
C1
47µF
16V
×2
L1
4.7µH
D1
1
6
ITH/RUN PGATE
LTC1772B
2
GND
3
VFB
5
VIN
SENSE– 4
U1
2 54
3
+ C2
M1
100µF
10V
×2
VOUT
5V
1A
R2
422k
C1: AVXTPSE476M016R0047
C2: AVXTPSE107M010R0100
D1: IR10BQ015
L1: MURATA LQN6C-4R7 U1: FAIRCHILD NC7SZ04
M1: Si9804
R1: DALE 0.25W
ALSO SEE LTC1872
FOR THIS APPLICATION
R3
80.6k
1772 TA03
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
2.6 – 3.0
(0.110 – 0.118)
1.50 – 1.75
(0.059 – 0.069)
S6 Package
6-Lead Plastic SOT-23
(LTC DWG # 05-08-1634)
0.00 – 0.15
(0.00 – 0.006)
0.90 – 1.45
(0.035 – 0.057)
2.80 – 3.00
(0.110 – 0.118)
(NOTE 3)
0.35 – 0.55
(0.014 – 0.022)
0.09 – 0.20
(0.004 – 0.008)
0.35 – 0.50
(0.014 – 0.020)
(NOTE 2)
SIX PLACES (NOTE 2)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.90 – 1.30
(0.035 – 0.051) 1.90
(0.074)
REF
0.95
(0.037)
REF
S6 SOT-23 0898
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PART NUMBER DESCRIPTION
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Constant Frequency Current Mode Step-Down
DC/DC Controller in SOT-23
LTC1773
95% Efficient Synchronous Step-Down Controller
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No RSENSE is a trademark of Linear Technology Corporation.
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
COMMENTS
High Frequency, Small Inductor, High Efficiency
VIN 2V to 10V, IOUT Up to 4.5A, Synchronizable to
750kHz Optional Burst Mode Operation, 8-Lead MSOP
N-Channel Drive, 3.5V ≤ VIN ≤ 36V
97% Efficiency, No Sense Resistor
Low Supply Voltage Range: 2.65V to 8V, IOUT = 0.5A
No Need for 5V Supply, Uses Standard Logic Gate
MOSFETs; IOUT up to 15A
Two Channels; Minimum CIN and COUT, IOUT up to 15A
High Efficiency 5V to 3.3V Conversion at up to 15A
10µA Supply Current, 93% Efficiency,
1.23V ≤ VOUT ≤ 18V; 2.8V ≤ VIN ≤ 20V
With Burst Mode Operation for Higher Efficiency
at Light Load Current
2.65V ≤ VIN ≤ 8.5V; 0.8V ≤ VOUT ≤ VIN; Current Mode; 550kHz
2.5V ≤ VIN ≤ 9.8V; 550kHz; 90% Efficiency
1772bf LT/TP 0201 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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