MAX689 데이터 시트보기 (PDF) - Maxim Integrated
부품명
상세내역
제조사
MAX689 Datasheet PDF : 12 Pages
| |||
High-Accuracy, Low-Dropout
Linear Regulators
ELECTRICAL CHARACTERISTICS (continued)
(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
MAX687: ON, PFO, SHDN
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
PFO Threshold Voltage Below
VNOM (Note 5)
VNOM -
VPFT
Falling VOUT, comparators monitor VOUT
PFO Hysteresis
Shutdown Threshold Voltage
Below VPFT
VPFT - VSD Falling VOUT, comparators monitor VOUT
Shutdown Threshold Voltage
PFO Output Voltage High
PFO Output Voltage Low
ON Threshold Voltage
ON Input Leakage Current
VSD Falling VOUT, comparators monitor VOUT
VOH ISOURCE = 50µA, part on, VIN = 2.7V
VOL ISINK = 1.2mA, VIN = 2.7V
VIH
Output turns on
VIL
Output remains off
MAX688/MAX689: SHDN, PFO
PFO Threshold Voltage
VPFT
Falling VOUT, com-
MAX688
parators monitor VOUT MAX689
PFO Hysteresis
SHDN Threshold Voltages
SHDN Hysteresis
VSON
VSSY
VSSD
On, SHDN falling
Standby
Shutdown
Rising SHDN, standby→on
SHDN Input Current
PFO, SHDN Transient Rejection
V SHDN = 1.23V
Glitch immunity
PFO Output Voltage Low
PFO Off Leakage Current
Output Noise Voltage
VOL ISINK = 1.2mA, VIN = 2.7V
V PFO = 11V, V SHDN > 1.25V
en
10Hz ≤ f ≤ 10kHz, ILOAD = 200mA
10Hz ≤ f ≤ 1MHz, ILOAD = 200mA
110
170
mV
7
mV
20
70
mV
2.96
V
VOUT - 0.3
V
0.06
0.3
V
1.0
V
0.2
0.2
100
nA
3.07 3.13 3.19
V
2.77 2.85 2.89
7
mV
1.25
1.0
1.2
V
0.2
70
mV
-25
25
nA
100
µs
0.06
0.3
V
1
µA
66
105
µVRMS
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 = 10µF for loads up to 100mA and 1µF/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.
_______________________________________________________________________________________ 3
Share Link: 