LTC3675EUFF#PBF Linear Technology, LTC3675EUFF#PBF Datasheet - Page 10

• Manufacturer Part Number: LTC3675EUFF#PBF
• Description: IC, PMIC, 1A, QFN-44
• Manufacturer: Linear Technology

Specifications of LTC3675EUFF#PBF

• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 1
• Digital Ic Case Style: QFN
• No. Of Pins: 44
• No. Of Regulated Outputs: 7
• Operating Temperature Range: -40°C To +125°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC3675
TYPICAL PERFORMANCE CHARACTERISTICS
AC-COUPLED
10
100mV/DIV
100mA/DIV
INDUCTOR
CURRENT
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
100
95
90
85
80
75
70
65
60
55
50
45
40
V
–55
OUT3
1
500mA Buck Regulators,
V
Ganged Buck Regulators 1 and 2,
Effi ciency vs Load
PULSE-SKIPPING MODE, LOAD = 250mA
V
OUT3
IN
–35
500mA Buck Regulators Transient
Response (Pulse-Skipping Mode)
LOAD STEP = 50mA to 300mA
V
= 3.6V, V
IN
= 3.6V, V
–15
vs Temperature
PULSE-SKIPPING MODE
10
Burst Mode OPERATION
LOAD CURRENT (mA)
TEMPERATURE (°C)
OUT1
5
OUT3
V
IN
25
= 1.2V
= 3.6V
100
= 1.8V
50μs/DIV
45
V
65
IN
= 5.5V
1000
V
IN
85 105 125
= 2.7V
3675 G22
3675 G25
10000
3675 G19
AC-COUPLED
100mV/DIV
100mA/DIV
INDUCTOR
CURRENT
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
100
90
80
70
60
50
40
30
20
10
V
0
OUT3
–55
1
500mA Buck Regulators, PMOS
Current Limit vs Temperature
Boost Regulator,
Effi ciency vs Load
–35
500mA Buck Regulators Transient
Response (Burst Mode Operation)
LOAD STEP = 50mA to 300mA
V
IN
= 3.6V, V
–15
LOAD CURRENT (mA)
TEMPERATURE (°C)
10
5
V
V
V
V
V
V
OUT3
IN
IN
IN
IN
IN
IN
V
= 2.7V Burst Mode OPERATION
= 3.6V Burst Mode OPERATION
= 1.2V Burst Mode OPERATION
= 2.7V PWM MODE
= 3.6V PWM MODE
= 4.2V PWM MODE
IN
25
= 1.8V
= 2.7V
50μs/DIV
45
V
100
IN
65
= 5.5V
V
IN
V
85 105 125
OUT5
= 3.6V
T
3675 G23
= 5V
3675 G26
A
1000
= 25°C, unless otherwise noted.
3675 G20
500mV/DIV
500mA/DIV
INDUCTOR
CURRENT
2V/DIV
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
OUT3
0
EN
–55
1
500mA Buck Regulators, Switch
R
Boost Regulator, Load Regulation
PWM MODE
500mA Buck Regulators No Load
Start-Up Transient
(Pulse-Skipping Mode)
DSON
V
–35
IN
= 3.6V
V
–15
IN
vs Temperature
PMOS R
NMOS R
= 3.6V
LOAD CURRENT (mA)
TEMPERATURE (°C)
10
5
PMOS R
DSON
DSON
25
25μs/DIV
NMOS R
, V
, V
V
45
IN
IN
DSON
IN
= 5.5V
= 4.2V
= 2.7V
100
DSON
65
, V
IN
V
, V
85 105 125
IN
= 2.7V
IN
= 2.7V
= 5.5V
3675 G27
3675 G24
3675 G21
3675f
1000