LTC3589 Linear Technology, LTC3589 Datasheet - Page 4

• Manufacturer Part Number: LTC3589
• Description: 8-Output Regulator
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
LTC3589
temperature range, otherwise specifi cations are at T
= DV
SYMBOL
V
I
f
Step Down Switching Regulators 1, 2, and 3
I
I
D
R
t
V
V
V
1.6A Step Down Switching Regulator 1 (Buck 1)
I
RP1
RN1
1.0A Step Down Switching Regulators 2 and 3
I
RP2, 3
RN2, 3
1.2A Buck-Boost Switching Regulator 4 (Buck-Boost)
I
V
V
I
I
I
I
RP4
RN4
R
t
I
4
FB
LIM1
LIM2, 3
LIM4
PEAK4
LIMR4
ZERO4
FB
VINLDO1
OSC
VIN
SS
VIN
SS
IN
OUTBB
X
SW
FB(MAX)
FB(LSB)
FB(MIN)
BB_FB
OUT4
DD
= 3.8V. All regulators disabled unless otherwise noted.
PARAMETER
Operating Input Supply Voltage, V
V
Oscillator Frequency
Pulse-Skipping Mode V
Per Buck
Burst Mode
Feedback Pin Input Current
Maximum Duty Cycle
SW Pull-Down Resistance
Soft-Start Rate
Maximum Feedback Voltage
Feedback LSB Step Size
Minimum Feedback Voltage
Peak PMOS Current Limit SW1
R
R
Peak PMOS Current Limit SW2
R
R
PWM Mode V
Burst Mode V
Feedback Voltage
Output Voltage Range
Peak PMOS Current Limit SW4AB
Forward Burst Current Limit (Switch A)
Reverse Current Limit (Switch D)
Reverse Burst Current Limit (Switch D)
R
R
BB_OUT Pull-Down Resistance
Soft-Start Rate
Feedback Pin Input Current
IN
DS(ON)
DS(ON)
DS(ON)
DS(ON)
DS(ON)
DS(ON)
Quiescent Current
of PMOS1
of NMOS1
of PMOS3
of NMOS3
of Switch A and Switch D
of Switch B and Switch C
®
V
IN
IN
IN
Quiescent Current
Quiescent Current
Quiescent Current Per Buck
IN
Quiescent Current
IN
A
= 25°C (Note 2). V
CONDITIONS
All Enables = 0V
V
V
V
Regulators Disabled
(Note 6)
BxDTV1 = BxDTV2 = 11111,
V
BxDTV1 = BxDTV2 = 00000,
V
I
I
V
V
Burst Mode Operation
Burst Mode Operation
I
I
Regulator Disabled
(Note 6)
V
SW1
SW1
SW4AB
SW4AB
The
FB
FB
FB
IN
IN
BB_FB
IN
FB
= 2.7V to 5.5V
=
= 2.7V to 5.5V, V
= 0.85V (Note 5)
= 0.8V
= 0V
= 0.85V
= 100mA
= 100mA
l
2.7V to 5.5V
= I
= I
= 0.85V
denotes the specifi cations which apply over the full operating junction
SW4CD
SW4CD
IN
= 100mA
= –100mA
= PV
OUT
IN1
= 5.5V
= PV
IN2
= PV
IN3
l
l
l
l
l
l
l
l
l
l
l
l
l
= PV
0.776
0.735
0.351
MIN
–0.1
–0.1
100
2.2
2.5
2.7
1.9
1.5
1.8
IN4
= V
IN_LDO2
0.3625
2000
2000
TYP
2.25
0.75
12.5
135
180
110
250
130
500
800
160
110
0.8
2.7
1.9
2.7
27
10
www.DataSheet4U.com
2
0
2
= V
IN_LDO34
0.824
0.765
0.374
MAX
TBD
130
5.5
2.6
0.1
5.0
0.1
17
40
19
UNITS
V/ms
V/ms
3589p
MHz
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mV
mA
mA
mA
μA
μA
μA
μA
μA
μA
μA
%
Ω
Ω
V
V
V
A
A
V
V
A