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MAX8621Y データシート(Datasheet) 5 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
_______________________________________________________________________________________
5
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
Power-Supply Rejection
ΔVOUT3/ΔVIN2
10Hz to 10kHz, COUT3 = 2.2µF, ILOAD = 30mA
60
dB
Output Noise Voltage (RMS)
100Hz to 100kHz, COUT3 = 2.2µF, ILOAD = 30mA
45
µVRMS
Output Capacitor for Stable
Operation
0 < ILOAD < 150mA
2.2
µF
OUT4 (LDO4)
VOUT(NOM)
≥ 1.8V
-1.3
+0.3
+2.0
TA = 0°C to
+85°C
VOUT(NOM) = 1.5V
-1.30
+0.3
+2.35
ILOAD = 1mA, 3.7V
VIN_
≤ 5.5V, relative to
VOUT(NOM)
TA = -40°C to +85°C
-2.3
+2.5
Output Voltage Accuracy
ILOAD = 75mA, relative to VOUT(NOM)
0
%
Output Current
150
mA
Current Limit
VOUT4 = 0V
165
360
650
mA
Dropout Voltage
ILOAD = 100mA, TA = +85°C
100
210
mV
Load Regulation
1mA < ILOAD < 150mA, VSEL1 = VSEL2 = 0
0.6
%
Power-Supply Rejection
ΔVOUT4/ΔVIN2
10Hz to 10kHz, COUT4 = 2.2µF, ILOAD = 30mA
60
dB
Output Noise Voltage (RMS)
100Hz to 100kHz, COUT4 = 2.2µF, ILOAD = 30mA
45
µVRMS
Output Capacitor for Stable
Operation
0 < ILOAD < 150mA
2.2
µF
DRIVER (DR)
ENDR Turn-On Threshold
IDR = 1mA
0.65
V
ENDR Input Current
VENDR = 0V and 5.5V
-1
+1
µA
DR Output Low Voltage
IDR = 150mA, VENDR = 3.7V
0.2
0.4
V
DR Off-Current (Leakage)
VDR = VIN = 5.5V, VENDR = 0V
-1
+1
µA
RESET
Output High Voltage
VOUT1
- 0.3V
V
Output Low Voltage
ISINK = 1mA
0.3
V
RESET Threshold
Percentage of nominal OUT1 rising when
RESET falls
84
87
90
%
RESET Active Timeout Period
From OUT1
≥ 87% until RESET = HIGH
60
ms
Pullup Resistance to OUT1
814
20
k
Ω
Note 1: VIN1, VIN2, and VIN3 are shorted together and single input is referred to as VIN.
Note 2: All units are 100% production tested at TA = +85°C. Limits over the operating range are guaranteed by design.
Note 3: OUT1, OUT2, OUT3, OUT4, LX1, and LX2 to ground.
Note 4: When the input voltage is greater than 2.85V (typ), the UVLO comparator trips and the threshold is reduced to 2.35V (typ).
This allows the system to start normally until the input voltage decays to 2.35V.




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