LTC1778EGN#TR Linear Technology, LTC1778EGN#TR Datasheet - Page 24
![IC CONTROLLR STP-DWN SYNC 16SSOP](/photos/6/59/65965/161-16-ssop_sml.jpg)
LTC1778EGN#TR
Manufacturer Part Number
LTC1778EGN#TR
Description
IC CONTROLLR STP-DWN SYNC 16SSOP
Manufacturer
Linear Technology
Type
Step-Down (Buck)r
Datasheet
1.LTC1778EGNPBF.pdf
(24 pages)
Specifications of LTC1778EGN#TR
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Current - Output
2A
Voltage - Input
4 ~ 36 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Output
-
Power - Output
-
Frequency - Switching
-
Other names
LTC1778EGNTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
RELATED PARTS
LTC1778/LTC1778-1
TYPICAL APPLICATIO
PART NUMBER
LTC1622
LTC1625/LTC1775
LTC1628-PG
LTC1628-SYNC
LTC1709-7
LTC1709-8
LTC1735
LTC1736
LTC1772
LTC1773
LTC1876
LTC3713
LTC3778
LT
Burst Mode is a registered trademark of Linear Technology Corporation.
24
®
3800
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
470pF
11.5k
C
R1
C1
24.9k
DESCRIPTION
550kHz Step-Down Controller
No R
Dual, 2-Phase Synchronous Step-Down Controller
Dual, 2-Phase Synchronous Step-Down Controller
High Efficiency, 2-Phase Synchronous Step-Down Controller
with 5-Bit VID
High Efficiency, 2-Phase Synchronous Step-Down Controller
High Efficiency, Synchronous Step-Down Controller
High Efficiency, Synchronous Step-Down Controller with 5-Bit VID
SOT-23 Step-Down Controller
Synchronous Step-Down Controller
2-Phase, Dual Synchronous Step-Down Controller with
Step-Up Regulator
Low V
Low V
60V Synchronous Step-Down Controller
R2
C
C
L1: TOKO A921CY-1R0M
IN
OUT
●
: TAIYO YUDEN TMK432BJ106MM
SENSE
FAX: (408) 434-0507
33k
: CORNELL DUBILIER ESRD121M04B
0.1µF
R
2200pF
IN
OUT
C
C
SS
100pF
High Current Synchronous Step-Down Controller
, No R
C2
C
Current Mode Synchronous Step-Down Controller
C2
SENSE
220k
100k
R
R
ON
PG
U
Synchronous Step-Down Controller
1
2
3
4
5
6
7
8
●
RUN/SS
PGOOD
V
FCB
I
SGND
I
V
TH
ON
RNG
FB
www.linear.com
LTC1778
Typical Application 2.5V/3A at 1.4MHz
EXTV
INTV
BOOST
PGND
SW
V
TG
BG
CC
CC
IN
16
15
14
13
12
11
10
9
C
0.22µF
CMDSH-3
B
C
4.7µF
C
0.1µF
1Ω
RF
VCC
F
D
B
COMMENTS
8-Pin MSOP; Synchronizable; Soft-Start; Current Mode
97% Efficiency; No Sense Resistor; 16-Pin SSOP
Power Good Output; Minimum Input/Output Capacitors;
3.5V ≤ V
Synchronizable 150kHz to 300kHz
Up to 42A Output; 0.925V ≤ V
Up to 42A Output; VRM 8.4; 1.3V ≤ V
Burst Mode
3.5V ≤ V
Mobile VID; 0.925V ≤ V
Current Mode; 550kHz; Very Small Solution Size
Up to 95% Efficiency, 550kHz, 2.65V ≤ V
0.8V ≤ V
3.5V ≤ V
1.5V ≤ V
0.6V ≤ V
Current Mode, Output Slew Rate Control
M1
1/2 Si9802
M2
1/2 Si9802
IN
IN
OUT
IN
IN
OUT
L1, 1µH
≤ 36V
≤ 36V
≤ 36V, Power Good Output, 300kHz Operation
≤ 36V, 0.8V ≤ V
®
≤ V
≤ (0.9)V
Operation; 16-Pin Narrow SSOP;
IN
, Synchronizable to 750kHz
IN
, 4V ≤ V
OUT
© LINEAR TECHNOLOGY CORPORATION 2001
+
OUT
≤ 2V; 3.5V ≤ V
OUT
IN
≤ (0.9)V
C
10µF
25V
C
120µF
4V
1778 TA03
LT/LT 0405 REV B • PRINTED IN USA
IN
OUT
≤ 36V, I
≤ 2V
V
9V TO 18V
V
2.5V
3A
OUT
IN
OUT
IN
IN
, I
OUT
≤ 3.5V
IN
≤ 8.5V,
OUT
≤ 36V
Up to 20A
Up to 20A
1778fb