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參數(shù)資料
| 型號(hào)： | MAX689CUA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | High-Accuracy, Low-Dropout Linear Regulators |
| 中文描述： | 3 V FIXED POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | MICRO MAX PACKAGE-8 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 103K |
| 代理商： | MAX689CUA-T |
MAX687/MAX688/MAX689
High-Accuracy, Low-Dropout
Linear Regulators
_______________________________________________________________________________________
3
Note 1: Minimum VIN for regulated VOUT depends on the characteristics of the external PNP transistor, and on the load. The refer-
ence and comparators are functional down to the minimum voltage specified, but the output may not be in regulation.
Note 2: Dropout voltage is defined as VIN - VOUT when VOUT is 50mV below its value at VIN = VNOM + 1V.
Note 3: The start-up time specification is the time taken from ON or SHDN rising to BASE sinking current. VOUT rise time is longer
and is a function of load capacitance, C2, and load resistance, RL.
Note 4: Minimum load capacitance is a function of RL. Minimum C2 = 10F for loads up to 100mA and 1F/10mA for higher loads.
ESR of C2 should be no larger than 1/100 of RL. Guaranteed by design.
Note 5: The nominal output voltage, VNOM, is defined under the default conditions of testing: VIN = 3.8V, IBASE = 1mA, TA = TMIN to TMAX.
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3.8V, SHDN = VIN (MAX688/MAX689), RB = 0, C1 = 2.2F, C2 = 10F, C3 = 10nF, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.)
Falling VOUT, comparators monitor VOUT
Glitch immunity
Rising SHDN, standby
→on
Shutdown
Standby
Falling VOUT, comparators monitor VOUT
On, SHDN falling
Output turns on
CONDITIONS
s
100
PFO, SHDN Transient Rejection
mV
70
SHDN Hysteresis
0.2
VSSD
1.0
1.2
VSSY
V
1.25
VSON
SHDN Threshold Voltages
mV
110
170
VNOM -
VPFT
PFO Threshold Voltage Below
VNOM (Note 5)
mV
7
PFO Hysteresis
V
2.96
VSD
Shutdown Threshold Voltage
V
1.0
VIH
ON Threshold Voltage
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ISOURCE = 50A, part on, VIN = 2.7V
V
VOUT - 0.3
VOH
PFO Output Voltage High
ISINK = 1.2mA, VIN = 2.7V
V
0.06
0.3
VOL
PFO Output Voltage Low
Output remains off
0.2
VIL
nA
0.2
100
ON Input Leakage Current
Falling VOUT, com-
parators monitor VOUT
V
3.07
3.13
3.19
VPFT
PFO Threshold Voltage
MAX688
MAX689
2.77
2.85
2.89
V SHDN = 1.23V
nA
-25
25
SHDN Input Current
10Hz
≤ f ≤ 10kHz, ILOAD = 200mA
V PFO = 11V, V SHDN > 1.25V
ISINK = 1.2mA, VIN = 2.7V
A
1
66
en
Output Noise Voltage
PFO Off Leakage Current
V
0.06
0.3
VOL
PFO Output Voltage Low
10Hz
≤ f ≤ 1MHz, ILOAD = 200mA
VRMS
105
Falling VOUT, comparators monitor VOUT
mV
20
70
VPFT - VSD
Shutdown Threshold Voltage
Below VPFT
mV
7
PFO Hysteresis
MAX688/MAX689: SHDN, PFO
MAX687: ON, PFO, SHDN
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