LTC3577EUFF#PBF Linear Technology, LTC3577EUFF#PBF Datasheet - Page 12

• 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: -

LTC3577/LTC3577-1
TYPICAL PERFORMANCE CHARACTERISTICS
12
0.5A/DIV
0.5A/DIV
0.5A/DIV
0.5A/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
ILIM0
V
V
V
I
I
I
I
OUT
BUS
BUS
OUT
BUS
BAT
BAT
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
–50
Switching from Suspend Mode to
5x Mode
Oscillator Frequency
vs Temperature
V
I
R
R
ILIM1 = 5V
Input Connect Waveform
V
I
R
R
OUT
OUT
BAT
BAT
CLPROG
PROG
CLPROG
PROG
–25
= 100mA
= 100mA
= 3.75V
= 3.75V
= 2k
= 2k
= 2k
= 2k
0
TEMPERATURE (°C)
V
100μs/DIV
25
IN
1ms/DIV
= 2.9V
50
75
V
V
V
IN
IN
IN
100
= 3.8V
= 2.7V
= 5V
3577 G16
3577 G19
3577 G13
125
0.5A/DIV
0.5A/DIV
0.5A/DIV
0.5A/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
WALL
I
V
WALL
V
V
I
I
I
OUT
100
BUS
OUT
BUS
BAT
BAT
90
80
70
60
40
30
20
10
50
0
0.01
Input Disconnect Waveform
WALL Connect Waveform
Step-Down Switching Regulator 1
3.3V Output Effi ciency vs I
V
I
R
V
I
R
R
OPERATION
OUT
OUT
Burst Mode
BAT
BAT
PROG
CLPROG
PROG
= 100mA
= 100mA
= 3.75V
= 3.75V
= 2k
= 2k
0.1
= 2k
1
I
1ms/DIV
OUT
1ms/DIV
PULSE-SKIPPING MODE
(mA)
10
V
V
V
OUT1
IN12
IN12
100
OUT1
T
= 3.3V
= 3.8V
= 5V
A
3577 G17
3577 G20
3577 G14
= 25°C unless otherwise specifi ed
1000
ILIM0/ILIM1
0.5A/DIV
0.5A/DIV
0.5A/DIV
0.5A/DIV
5V/DIV
5V/DIV
5V/DIV
WALL
I
V
WALL
I
I
I
OUT
100
BUS
BAT
BAT
90
80
70
60
50
40
30
20
10
0
0.01
WALL Disconnect Waveform
V
I
R
Step-Down Switching Regulator 2
1.8V Output Effi ciency vs I
Switching from 1x to 5x Mode
V
I
R
R
OUT
OUT
OPERATION
BAT
PROG
BAT
CLPROG
PROG
Burst Mode
= 100mA
= 50mA
= 3.75V
= 3.75V
= 2k
= 2k
0.1
= 2k
1
I
1ms/DIV
OUT
1ms/DIV
PULSE-SKIPPING MODE
(mA)
10
V
V
V
OUT2
IN12
IN12
100
OUT2
= 1.8V
= 3.8V
= 5V
3577 G18
3577 G21
3577 G15
3577fa
1000