LTC1772BES6#TRPBF Linear Technology, LTC1772BES6#TRPBF Datasheet - Page 16

• Manufacturer Part Number: LTC1772BES6#TRPBF
• Description: IC CTRLR DC/DC S-DWN SOT23-6
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1772BES6#TRPBF

• 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: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-6, TSOT-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC1772B
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LT1375/LT1376
LTC1622
LTC1624
LTC1625
LTC1627
LTC1649
LTC1702
LTC1735
LTC1771
LTC1772
LTC1773
LTC1872
No R
16
SENSE
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
1.5A, 500kHz Step-Down Switching Regulators
Low Input Voltage Current Mode Step-Down DC/DC Controller
High Effi ciency SO-8 N-Channel Switching Regulator Controller
No R
Low Voltage, Monolithic Synchronous Step-Down Regulator
3.3V Input Synchronous Step-Down Controller
550kHz, 2 Phase, Dual Synchronous Controller
Single, High Effi ciency, Low Noise Synchronous Switching
Controller
Ultra-Low Supply Current Step-Down DC/DC Controller
Constant Frequency Current Mode Step-Down
DC/DC Controller in SOT-23
95% Effi cient Synchronous Step-Down Controller
SOT-23 Step-Up Controller
SENSE
●
FAX: [phone]
C1: AVXTPSE476M016R0047
C2: AVXTPSE107M010R0100
D1: IR10BQ015
TM
R4
10k
Synchronous Step-Down Regulator
C3
220pF
3.3V
V
1
2
3
IN
●
I
GND
V
TH
FB
www.linear.com
/RUN
LTC1772B
LTC1772B 3.3V to 5V/1A Boost Regulator
SENSE
PGATE
L1: MURATA LQN6C-4R7
M1: Si9804
R1: DALE 0.25W
C1
47μF
16V
×2
V
IN
–
6
5
4
2
U1
0.033Ω
R1
5
3
4
U1: FAIRCHILD NC7SZ04
ALSO SEE LTC1872
FOR THIS APPLICATION
COMMENTS
High Frequency, Small Inductor, High Effi ciency
V
750kHz Optional Burst Mode Operation, 8-Lead MSOP
N-Channel Drive, 3.5V ≤ V
97% Effi ciency, 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 Effi ciency 5V to 3.3V Conversion at up to 15A
10μA Supply Current, 93% Effi ciency, 1.23V ≤ V
2.8V ≤ V
With Burst Mode Operation for Higher Effi ciency at Light Load
Current
2.65V ≤ V
2.5V ≤ V
M1
L1
4.7μH
IN
2V to 10V, I
D1
IN
IN
IN
+
≤ 20V
≤ 9.8V; 550kHz; 90% Effi ciency
OUT
≤ 8.5V; 0.8V ≤ V
OUT
up to 15A
C2
100μF
10V
×2
Up to 4.5A, Synchronizable to
R2
422k
R3
80.6k
IN
IN
© LINEAR TECHNOLOGY CORPORATION 1999
1772 TA03
≤ 36V
OUT
and C
V
5V
1A
OUT
≤ V
OUT
IN
LT 0508 REV A • PRINTED IN USA
, I
; Current Mode; 550kHz
OUT
OUT
up to 15A
= 0.5A
OUT
≤ 18V;
1772bfa