LTC1700 Linear Technology, LTC1700 Datasheet - Page 16

• Manufacturer Part Number: LTC1700
• Description: No RSENSE Synchronous Step-Up DC/DC Controller
• Manufacturer: Linear Technology

RELATED PARTS
TYPICAL APPLICATIO
LTC1700
PART NUMBER
LT1302
LT1304 Series
LT1307/LT1307B
LT1316
LT1317
LT1517-5
LT1610
LT1611
LT1613
LT1619
LTC1625
LTC1871
LTC1872
LTC3401/LTC3402
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
DESCRIPTION
Micropower Step-Up Regulator
2-Cell Micropower Step-Up Regulator
Single Cell Micropower Step-Up Regulator
Burst Mode Operation DC/DC with Programmable Current Limit
2-Cell Micropower Step-Up Regulator
Micropower, Regulated Charge Pump
1.7MHz Single Cell Micropower Step-Up Regulator
Inverting 1.4MHz Switching Regulator
1.4MHz Single Cell Micropower Regulator
Micropower Step-Up Regulator Controller
No R
Boost, Flyback and SEPIC Controller
SOT-23, 550kHz Step-Up Controller
Integrated 1A and 2A Synchronous Step-Up Regulators
C1: TAIYO YUDEN CERAMIC JMK316BJ106ML
C2: AVX TAJB68K006R
C3: TAIYO YUDEN CERAMIC JMK325BJ226M
C4: KEMET T520D227M006AS
33k
SENSE
30k
300pF
470pF
Synchronous Step-Down Controller
470pF
53.6k
U
1
2
4
3
5
LTC1700 2.5V V
www.linear.com
SGND
I
RUN/SS
V
SYNC/MODE
TH
FB
LTC1700
PGND
V
OUT
SW
BG
TG
IN
10
8
9
6
7
L1: MURATA LQN6C
M1: Si9802
M2: Si9803
3.3V/1.8A Output Regulator
M1
2.2 H
L1
M2
COMMENTS
5V/600mA from 2V, 2A Internal Switch, 200 A I
Low-Battery Detector Active in Shutdown
3.3V/75mA From 1V; 600kHz Fixed Frequency
1.5V Minimum V
3.3V/200mA From Two Cells; 600kHz Fixed Frequency
3-Cells to 5V at 20mA, SOT-23 Package, 6 A I
30 A IQ, MSOP Package, Internal Compensation
5V to -5V at 150mA, Low Output Noise
5-Lead SOT-23 Package
Drives External NMOS; 3.3V to 5V at up to 8A
Up to 97% Efficiency; 3.7V V
1.19V V
5V V
50kHz to 1MHz; 10-Lead MSOP
Minimum Board Area; Drives External NMOS
Up to 97% Efficiency; up to 3MHz Operation; No External
Diode; 0.85V Start-Up Voltage
IN
OUT
C1
10 F
C3
22 F
30V; No R
+
+
V
IN
IN
; Precise Control of Peak Switch Current
; I
C2
68 F
6.3V
C4
220 F
6.3V
OUT
SENSE
LINEAR TECHNOLOGY CORPORATION 2000
up to 15A
1700 • TA02
, Programmable Frequency
V
2.5V
V
3.3V/1.8A
IN
OUT
1700f LT/TP 0801 2K • PRINTED IN USA
IN
36V;
Q
Q