LTC3675EUFF#PBF Linear Technology, LTC3675EUFF#PBF Datasheet - Page 4

• 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

ELECTRICAL CHARACTERISTICS
LTC3675
junction temperature range, otherwise specifi cations are at T
SYMBOL
V
V
V
V
V
V
OT
OT_WARN
I
f
V
V
1A Buck Regulator (Buck Regulators 1 and 2)
I
I
V
V
V
I
D
R
R
I
I
R
t
500mA Buck Regulator (Buck Regulators 3 and 4)
I
I
4
VIN_ALLOFF
OSC
VIN1,2
FWD1,2
FB12
LEAKP1,2
LEAKN1,2
SS1,2
VIN3,4
FWD3,4
IN
IN_FALLING
IN_RISING
IN_WARN
IN_HYS
IN_WARN(LSB)
PGOOD(RISE)
PGOOD(HYS)
FB1,2(HIGH)
FB1,2(LOW)
LSB1,2
MAX1,2
PMOS1,2
NMOS1,2
SWPD1,2
PARAMETER
Input Supply Range
Falling Undervoltage Threshold
Rising Undervoltage Threshold
Falling Undervoltage Warning Threshold
V
Undervoltage Warning Threshold Step Size
Overtemperature Shutdown
Overtemperature Warning Threshold; Die
Temperature Below OT that Causes IRQB = 0
Input Supply Current
Voltage Regulator Switching Frequency
Rising PGOOD Threshold Voltage
PGOOD Hysteresis
Pulse-Skipping Input Current
Burst Mode
PMOS Current Limit
Feedback Regulation Voltage
Feedback Regulation Voltage
FB1, FB2 Regulation Voltage Step Size
Feedback Leakage Current
Maximum Duty Cycle
PMOS On-Resistance
NMOS On-Resistance
PMOS Leakage Current
NMOS Leakage Current
Output Pull-Down Resistance in Shutdown
Soft-Start Time
Pulse-Skipping Input Current
Burst Mode Operation Input Current
PMOS Current Limit
IN
Undervoltage Warning Hysteresis
®
Operation Input Current
CONDITIONS
UV[2], UV[1], UV[0] = 000
UV[2], UV[1], UV[0] = 001
UV[2], UV[1], UV[0] = 010
UV[2], UV[1], UV[0] = 011
UV[2], UV[1], UV[0] = 100
UV[2], UV[1], UV[0] = 101
UV[2], UV[1], UV[0] = 110
UV[2], UV[1], UV[0] = 111
OT[1], OT[0] = 00
OT[1], OT[0] = 01
OT[1], OT[0] = 10
OT[1], OT[0] = 11
All Switching Regulators and LED Driver
in Shutdown, ONB = HIGH; Sum of All V
Currents
All Voltage Regulators
Full-Scale (1,1,1,1) Reference Voltage
All Regulators Except LED Driver
V
V
(Note 6)
Pulse-Skipping Mode Full-Scale (1,1,1,1)
Pulse-Skipping Mode Full-Scale (0,0,0,0)
V
V
I
I
EN1 = EN2 = 0
EN1 = EN2 = 0
EN1 = EN2 = 0 (I
V
V
(Note 6)
SW1
SW1
FB1
FB1
FB1
FB1
FB3
FB3
The
= V
= V
= V
= V
= I
= I
= V
= V
A
FB2
FB2
SW2
SW2
= 25°C. V
FB2
FB2
FB4
FB4
l
denotes the specifi cations which apply over the full operating
= 0.85V
= 0V
= 0.85V (Notes 4, 5)
= 0.85V (Notes 4, 5)
= 0.85V (Notes 4, 5)
= 0.85V (Notes 4, 5)
= 100mA
= –100mA
2
C Bit Set)
IN
= 3.6V.
IN
l
l
l
l
l
l
l
l
2.35
2.45
2.25
0.75
MIN
780
405
–50
100
2.7
1.8
85
–2
–2
2.45
2.55
2.25
93.5
TYP
100
150
105
800
425
265
280
500
105
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
2.8
1.2
50
10
20
30
40
16
20
25
10
20
1
MAX
2.55
2.65
3.35
1.65
115
200
820
445
200
5.5
2.7
28
50
50
50
2
2
UNITS
MHz
3675f
mΩ
mΩ
mV
mV
mV
mV
mV
kΩ
μA
μA
μA
nA
μA
μA
μA
μA
°C
°C
°C
°C
°C
μs
%
%
%
V
V
V
V
V
V
V
V
V
V
V
A
A