參數(shù)資料
型號: LTC3589EUJ-1#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, PQCC40
封裝: 6 X 6 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-40
文件頁數(shù): 34/46頁
文件大小: 570K
代理商: LTC3589EUJ-1#TRPBF
LTC3589/LTC3589-1
4
3589fc
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Operating Input Supply Voltage, VIN
l
2.7
5.5
V
IVINLDO1
VIN Quiescent Current
All Enables = 0V
l
818
μA
fOSC
Oscillator Frequency
l
1.8
2.25
2.6
MHz
Step-Down Switching Regulators 1, 2, and 3
IVIN
Pulse-Skipping Mode VIN Quiescent Current
per Buck
Burst Mode VIN Quiescent Current per Buck
VFB = 0.85V (Note 5)
l
120
23
200
40
μA
IFB
Feedback Pin Input Current
VFB = 0.8V
–50
50
nA
DX
Maximum Duty Cycle
VFB = 0V
100
%
RSW
SW Pull-Down Resistance
Regulators Disabled
2.5
tSS
Soft-Start Rate
(Note 6)
0.8
V/ms
VFB(MAX)
Maximum Feedback Voltage
BxDTV1 = BxDTV2 = 11111,
VIN = 2.7V to 5.5V
l
0.735
0.75
0.765
V
VFB(LSB)
Feedback LSB Step Size
12.5
mV
VFB(MIN)
Minimum Feedback Voltage
BxDTV1 = BxDTV2 = 00000,
VIN = 2.7V to 5.5V
l
0.351
0.3625
0.374
V
1.6A Step-Down Switching Regulator 1
ILIM1
Peak PMOS Current Limit SW1
l
2.0
2.7
A
RP1
RDS(ON) of PMOS1
ISW1 = 100mA
180
RN1
RDS(ON) of NMOS1
ISW1 = 100mA
110
1.0A/1.2A Step-Down Switching Regulators 2 and 3
ILIM2, 3
Peak PMOS Current Limit SW2 and SW3 (LTC3589)
Peak PMOS Current Limit SW2 and SW3 (LTC3589-1)
l
1.5
1.8
1.9
2.3
A
RP2, 3
RDS(ON) of PMOS2 and PMOS3
250
RN2, 3
RDS(ON) of NMOS2 and NMOS3
130
1.2A Buck-Boost Switching Regulator 4 (Buck-Boost)
IVIN
PWM Mode VIN Quiescent Current
Burst Mode VIN Quiescent Current
VBB_FB = 0.85V (Note 5)
l
115
19
170
35
μA
VBB_FB
Feedback Voltage
VIN = 2.7V to 5.5V, VOUT = 5.5V
l
0.776
0.8
0.824
V
VOUTBB
Output Voltage Range
1.8
5.0
V
ILIM4
Peak PMOS Current Limit SW4AB
l
2.3
2.9
A
IPEAK4
Forward Burst Current Limit (Switch A)
Burst Mode Operation
600
mA
ILIMR4
Reverse Current Limit (Switch D)
1
A
IZERO4
Reverse Burst Current Limit (Switch D)
Burst Mode Operation
0
mA
RP4
RDS(ON) of Switch A and Switch D
ISW4AB = ISW4CD = 100mA
160
RN4
RDS(ON) of Switch B and Switch C
ISW4AB = ISW4CD = –100mA
110
ROUT4
BB_OUT Pull-Down Resistance
Regulator Disabled
2.5
tSS
Soft-Start Rate
(Note 6)
2
V/ms
IFB
Feedback Pin Input Current
VFB = 0.85V
–50
50
nA
The
l denotes the specifications which apply over the full operating junction
temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_LDO2 = VIN_LDO34
= DVDD = 3.8V. All regulators disabled unless otherwise noted.
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