LTC3577EUFF#PBF Linear Technology, LTC3577EUFF#PBF Datasheet - Page 23

• Manufacturer Part Number: LTC3577EUFF#PBF
• Description: IC PWR MANAGEMENT HANDHELD 44QFN
• Manufacturer: Linear Technology

Specifications of LTC3577EUFF#PBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 4.35 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

OPERATION
(TRANSIENTS
8V TO 36V
8V TO 38V
TO 60V)
HV
Figure 4. LT3505 Buck Control Using V
HV
IN
IN
1μF
BUCK CIRCUITRY
HIGH VOLTAGE
4.7μF
BUCK CIRCUITRY
HIGH VOLTAGE
LT3505
Figure 3. LT3480 Buck Control Using V
LT3480
68nF
20k
68nF
806k
BZT52C16T
40.2k
150k
150k
10
4
5
7
6
3
4
6
V
RUN/SS
R
NC
NC
GND
V
SHDN
R
IN
T
GND
IN
T
LT3480
11
LT3505
5, 9
BOOST
BOOST
V
V
C
V
SW
C
V
C
BD
9
FB
42
SW
C
C
(2.2MHz Switching with Frequency Foldback)
8
42
WALL ACPR
FB
LTC3577
WALL ACPR
LTC3577
2
3
1
8
4
1
2
7
4
0.47μF
IDGATE
DFLS240L
0.1μF
41
IDGATE
MBRM140
V
41
BAT
V
OUT
C
BAT
OUT
(800kHz Switching)
6.8μH
1N4148
6.8μH
39
37
38
39
37
38
49.9k
10.0k
Si2333DS
499k
100k
LTC3577/LTC3577-1
Si2333DS
10μF
22μF
+
+
Si2333DS
(OPT)
3577 F04
Si2333DS
(OPT)
Li-Ion
3577 F03
UP TO
1.2A
Li-Ion
UP TO
2A
C
C
OUT
OUT
V
BAT
OUT
V
BAT
OUT
23
3577fa