LTC1649CS#PBF Linear Technology, LTC1649CS#PBF Datasheet - Page 16

• Manufacturer Part Number: LTC1649CS#PBF
• Description: IC BUCK/SW CAP SYNC ADJ 16SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Switched Capacitor (Charge Pump)r

Specifications of LTC1649CS#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.26 ~ 2.5 V
• Current - Output: 20A
• Frequency - Switching: 200kHz
• Voltage - Input: 2.7 ~ 5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

RELATED PARTS
LTC1649
TYPICAL APPLICATIO
PART NUMBER
LTC1430A
LTC1517-5
LTC1702
LTC1772
LTC1773
LTC1874
LTC1876
16
CERAMIC
SHDN
10 F
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
Si9802 = SILICONIX
DESCRIPTION
High Power Step-Down Switching Regulator Controller
Micropower, Regulated 5V Charge Pump in a 5-Pin SOT-23 Package
2-Phase, Dual Output DC/DC Step-Down Controller
SOT-23 Step-Down DC/DC Controller
3.3V Input DC/DC Synchronous Step-Down Controller
Dual Output DC/DC Step-Down Controller
Triple Ouput 2-Phase DC/DC Controller
22
220pF
MBR0530
7.5k
0.01 F
U
0.1 F
0.1 F
CERAMIC
NC
1 F
4.7k
P
P
V
I
SHDN
COMP
SS
GND
MAX
VCC1
VCC2
CC
+
–
LTC1649
SSTL Logic Termination Supply
1/2 LT1211
2200pF
CP
OUT
V
I
G1
G2
FB
C
C
FB
IN
+
–
10k
MBR0530
10k
1 F
CERAMIC
+
10 F
+
–
10k
3.3V
V
IN
1/2 LT1211
Q1
1/2
Si9802
Q2
1/2
Si9802
COMMENTS
5V to 1.xV @10A, Maximum Duty cycle > 90% Permits
3.3V to 2.xV Conversion
Low Power 3.3V to 5V Step-Up Converter
3.3V Input to As Low As 0.8V Conversion, Minimum C
and C
550kHz Operation for Small Circuit
550kHz Operation, Up to 6A Output, 10-Lead MSOP
550kHz Operation, Up to 4A Output, 16-Lead SSOP
Converts 3.3V
N-Channel MOSFETS, Eliminates Need for Auxiliary 5V
Supply, >90% Efficiency
50pF
OUT
R1
18.2k
R2
15k
1649 TA04
IN
1.5 H
L
EXT
to Two Output Voltages Using 5V Logic
1649fa LT/TP 0501 REV A 2K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1998
+
+
1500 F
1500 F
V
= 0.45V
= 1.48V AT V
OUT
IN
AT 5A
IN
= 3.3V
IN