MAX687 Просмотр технического описания (PDF) - Maxim Integrated
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MAX687 Datasheet PDF : 12 Pages
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High-Accuracy, Low-Dropout
Linear Regulators
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage IN to GND ............................................12V
Terminal Voltages to GND
PFO (MAX687) ........................................-0.3V to VOUT + 0.3V
PFO (MAX688/MAX689) ......................................-0.3V to 12V
All Remaining Pins .....................................-0.3V to VIN + 0.3V
PFO Sink Current ...............................................................10mA
PFO Source Current (MAX687)...........................................10mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
µMAX (derate 4.1mW/°C above +70°C) ......................330mW
Operating Temperature Ranges
MAX68_C_A .......................................................0°C to +70°C
MAX68_E_A ....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 3.8V, SHDN = VIN (MAX688/MAX689), RB = 0Ω, C1 = 2.2µF, C2 = 10µF, C3 = 10nF, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.)
PARAMETER
LINEAR REGULATOR
Supply Voltage
Output Voltage
Dropout Voltage (Note 2)
Line Regulation
Load Regulation
Supply Current
BASE Sink Current
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VIN
(Note 1)
VOUT
MAX687/MAX688
MAX689
VIN = 3.8V, IBASE = 1mA
3.8V ≤ VIN ≤ 11.0V,
1µA ≤ IBASE ≤ 10mA
VIN = 3.5V, IBASE = 1mA
3.5V ≤ VIN ≤ 11.0V,
1µA ≤ IBASE ≤ 10mA
VIN - VOUT PNP = FZT749, ILOAD = 200mA, C2 = 20µF
MAX687/MAX688
3.8V ≤ VIN ≤ 11.0V,
IBASE = 1mA
MAX689
3.5V ≤ VIN ≤ 11.0V,
IBASE = 1mA
IGND
1µA ≤ IBASE ≤ 10mA
VIN = 3.8V,
PNP = FZT749,
no load
On
Standby,
MAX688/MAX689
Shutdown
IBASE VBASE = VIN - 1V
2.7
3.2
3.13
2.9
2.85
10
3.3
3.3
3.0
3.0
40
0.4
0.4
45
150
11
< 0.02
20
11.0
3.4
3.47
3.1
3.15
1.4
1.4
60
250
25
1
40
V
V
mV
mV/V
mV
µA
mA
Base-Current Limit
RB is connected from BASE to BLIM (Ω),
RB = 0Ω to 100Ω
70
100
130
RB + 5Ω RB + 5Ω RB + 5Ω
mA
Start-Up Time
Start-Up Overshoot
Load Capacitance
(Note 3)
300
µs
2
%
C2
PNP = FZT749, ILOAD = 100mA (Note 4)
10
µF
2 _______________________________________________________________________________________
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