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MAX8621Y データシート(Datasheet) 3 Page - Maxim Integrated Products

部品番号. MAX8621Y
部品情報  Dual Step-Down DC-DC Power-Management ICs for Portable Devices
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メーカー  MAXIM [Maxim Integrated Products]
ホームページ  http://www.maxim-ic.com
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Dual Step-Down DC-DC Power-Management ICs
for Portable Devices
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3.7V, CIN1 = 10µF, CIN2 = CIN3 = 4.7µF, COUT1 = COUT2 = 4.7µF, COUT3 = COUT4 = 2.2µF, CREFBP = 0.01µF, TA = -40°C to
+85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Tristate High Input Threshold
Hysteresis
SEL_
50
mV
PWRON,
EN2 Pulldown Resistor
to GND
400
800
1600
k
Ω
STEP-DOWN DC-DC CONVERTER 1 (BUCK1)
Supply Current
ILOAD = 0A, no switching
40
µA
Output Voltage Range
0.6
3.3
V
FB1 Threshold Voltage
VFB1 falling
0.603
V
FB1 Threshold Line Regulation
2.6V
≤ VIN ≤ 5.5V
0.3
%/V
FB1 Threshold Voltage Hysteresis
(% of VFB1)
1%
Shutdown
0.01
FB1 Bias Current
VFB1 = 0.5V
0.01
µA
p-MOSFET switch (ILIMP)
670
1000
1500
Current Limit
n-MOSFET rectifier (ILIMN)
750
1000
1330
mA
p-MOSFET switch, ILX1 = -40mA
0.65
1.5
On-Resistance
n-MOSFET rectifier, ILX1 = 40mA
0.35
0.8
Ω
Rectifier Off-Current Threshold
ILXOFF
45
70
mA
tON
107
Minimum On- and Off-Times
tOFF
95
ns
STEP-DOWN DC-DC CONVERTER 2 (BUCK2)
Supply Current
ILOAD = 0A, no switching
40
µA
Output Voltage Range
0.6
3.3
V
FB2 Threshold Voltage
VFB2 falling
0.603
V
FB2 Threshold Line Regulation
2.6V
≤ VIN ≤ 5.5V
0.3
%/V
FB2 Threshold Voltage Accuracy
(Falling) (% of VFB2)
ILOAD = 0A
-2.5
+2.5
%
FB2 Threshold Voltage Hysteresis
(% of VFB2)
1%
Shutdown
0.01
FB2 Bias Current
VFB = 0.5V
0.01
µA
p-MOSFET switch
670
1000
1500
Current Limit
n-MOSFET rectifier
750
1000
1330
mA
p-MOSFET switch, ILX2 = -40mA
0.65
1.5
On-Resistance
n-MOSFET rectifier, ILX2 = 40mA
0.35
0.8
Ω
Rectifier Off-Current Threshold
ILXOFF
45
70
mA
tON
107
Minimum On- and Off-Times
tOFF
95
ns




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