LTC3801 LINER [Linear Technology], LTC3801 Datasheet - Page 12

• Manufacturer Part Number: LTC3801
• Description: Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT
• Manufacturer: LINER [Linear Technology]

RELATED PARTS
LTC3801/LTC3801B
PART NUMBER
LTC1147 Series
LTC1622
LTC1624
LTC1625
LTC1702A
LTC1733
LT
LTC1771
LTC1772/LTC1772B
LTC1778/LTC1778-1
LTC1779
LTC1872/LTC1872B
LTC3411/LTC3412
LTC3440
No R
12
TYPICAL APPLICATIO
®
220pF
1765
SENSE
402k
10k
550kHz Micropower Step-Down DC/DC Controller
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
866k
I
GND
V
TH
FB
/RUN
LTC3801B
LTC3801/
DESCRIPTION
High Efficiency Step-Down Switching Regulator Controllers
Low Input Voltage Current Mode Step-Down DC/DC Controller
High Efficiency SO-8 N-Channel Switching Regulator Controller
No R
550kHz, 2 Phase, Dual Synchronous Controller
Li-Ion Linear Battery Charger
25V, 2.75A (I
Ultra-Low Supply Current Step-Down DC/DC Controller
550kHz ThinSOT Step-Down DC/DC Controllers
No R
250mA Monolithic Step-Down Converter in ThinSOT
550kHz ThinSOT Step-Up DC/DC Controllers
1.25/2.5A Monolithic Synchronous Step-Down Converter
600mA (I
SENSE
PGATE
SENSE
SENSE
V
IN
–
OUT
TM
Current Mode Synchronous Step-Down Controllers
), 2MHz Synchronous Buck-Boost DC/DC Converter
Synchronous Step-Down Regulator
OUT
), 1.25MHz Step-Down Converter
0.025
U
4.7 H
www.linear.com
+
10 F
47 F
V
2.7V TO 9.8V
IN
3801 TA01
V
2.5V
2A
OUT
*SEE THE FRONT PAGE OF THIS DATA SHEET FOR THE EFFICIENCY vs LOAD CURRENT CURVE
COMMENTS
100% Duty Cycle, 3.5V V
V
750kHz Optional Burst Mode Operation, 8-Lead MSOP
N-Channel Drive, 3.5V V
97% Efficiency, No Sense Resistor
Two Channels; Minimum C
Standalone Charger with Charge Termination, Integrated
MOSFET, Thermal Regulator Prevents Overheating
3V V
10 A Supply Current, 93% Efficiency,
1.23V V
2.5V V
4V V
2.5V V
2.5V V
95% Efficiency, 2.5V V
TSSOP16 Exposed Pad Package
2.5V V
LTC3801 No-Load I
IN
21
15
25
23
19
17
2V to 10V, I
3
IN
IN
V
FRONT PAGE APPLICATION
OUT
IN
IN
IN
IN
OUT
4
25V, V
36V, 0.8V V
= 2.5V
9.8V, V
9.8V, 550kHz, V
9.8V; 90% Efficiency
5.5V, Single Inductor
V
OUT
18V; 2.8V V
5
IN
OUT
INPUT VOLTAGE (V)
Up to 4.5A, Synchronizable to
OUT
6
Q
LINEAR TECHNOLOGY CORPORATION 2003
1.2V, SO-8 and TSSOP16 Packages
IN
vs Input Voltage*
OUT
IN
0.8V, I
IN
IN
7
LT/TP 1103 1K • PRINTED IN THE USA
OUT
5.5V, V
and C
IN
36V
(0.9)(V
16V
OUT
8
20V
OUT
0.8V
OUT
IN
, I
9
6A
3801 TA04
), I
OUT
0.8V,
OUT
10
up to 15A
Up to 20A
3801f