LTC1772CS6#TR Linear Technology, LTC1772CS6#TR Datasheet - Page 12

• Manufacturer Part Number: LTC1772CS6#TR
• Description: IC CTRLR DC/DC STEPDOWN SOT23-6
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1772CS6#TR

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 9.8 V
• Current - Output: 1A
• Frequency - Switching: 550kHz
• Voltage - Input: 2.5 ~ 9.8 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-6, TSOT-6
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

RELATED PARTS
LTC1772
PART NUMBER
LTC1147 Series
LT1375/LT1376
LTC1622
LTC1624
LTC1625
LTC1627
LTC1649
LTC1702
LTC1735
LTC1771
LTC1872
No R
12
TYPICAL APPLICATIONS
SENSE
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
High Efficiency Step-Down Switching Regulator Controllers
1.5A, 500kHz Step-Down Switching Regulators
Low Input Voltage Current Mode Step-Down DC/DC Controller
High Efficiency SO-8 N-Channel Switching Regulator Controller
No R
Low Voltage, Monolithic Synchronous Step-Down Regulator
3.3V Input Synchronous Controller
550kHz, 2 Phase, Dual Synchronous Controller
Single, High Efficiency, Low Noise Synchronous Switching Controller
Ultra-Low Supply Current Step-Down DC/DC Controller
SOT-23 Step-Up Controller
SENSE
●
FAX: [phone]
TM
Synchronous Step-Down Regulator
C1: AVXTPSE476M016R0047
C2: AVXTPSE107M010R0100
D1: IR10BQ015
C1: AVXTPSE476M016R0047
C2: AVXTPSE107M010R0100
D1: IR10BQ015
R4
10k
C3
220pF
U
R4
10k
C3
220pF
●
www.linear.com
3.3V
V
1
2
3
LTC1772 3.3V to 5V/1A Boost Regulator
IN
1
2
3
I
GND
V
TH
LTC1772 5V/0.5A Flyback Regulator
FB
I
GND
V
/RUN
TH
FB
LTC1772
/RUN
LTC1772
SENSE
PGATE
SENSE
22Ω
L1: MURATA LQN6C-4R7
M1: Si9804
R1: DALE 0.25W
C1
47µF
16V
× 2
PGATE
R5
M1: Si9803
R1: DALE 0.25W
T1: COILTRONICS CTX10-4
V
IN
–
V
IN
–
6
5
4
C4
100pF
CERAMIC
6
5
4
2
U1
0.033Ω
R1
3
10µH
5
4
•
T1
R1
0.033Ω
M1
U1: FAIRCHILD NC7SZ04
ALSO SEE LTC1872
FOR THIS APPLICATION
100Ω
10µH
•
R6
M1
L1
4.7µH
CERAMIC
D1
150pF
C5
D1
COMMENTS
100% Duty Cycle, 3.5V ≤ V
High Frequency, Small Inductor, High Efficiency
V
750kHz Optional Burst Mode Operation, 8-Lead MSOP
N-Channel Drive, 3.5V ≤ V
97% Efficiency, No Sense Resistor
Low Supply Voltage Range: 2.65V to 8V, I
No Need for 5V Supply, Uses Standard Logic Gate
MOSFETs; I
Two Channels; Minimum C
High Efficiency 5V to 3.3V Conversion at up to 15A
10µA Supply Current, 93% Efficiency,
1.23V ≤ V
2.5V ≤ V
+
IN
+
2V to 10V, I
C2
47µF
16V
×2
C2
100µF
10V
×2
C2
100µF
10V
× 2
IN
OUT
≤ 9.8V; 550kHz; 90% Efficiency
OUT
R2
52.3k
R3
10k
V
2.5V
TO 9.8V
IN
≤ 18V; 2.8V ≤ V
R2
422k
R3
80.6k
1772 TA04
OUT
up to 15A
V
5V
0.5A
1772 TA03
OUT
V
5V
1A
OUT
Up to 4.5A, Synchronizable to
© LINEAR TECHNOLOGY CORPORATION 1999
IN
IN
IN
LT/LT 0605 500 REV B • PRINTED IN USA
≤ 36V
and C
≤ 16V
IN
≤ 20V
OUT
, I
OUT
OUT
up to 15A
= 0.5A
1772fb