MAX629 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX629 Datasheet PDF : 12 Pages
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28V, Low-Power, High-Voltage,
Boost or Inverting DC-DC Converter
____________________________Typical Operating Characteristics (continued)
(SHDN = VCC , CREF = 0.1µF, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. INPUT VOLTAGE
700
VIN = VCC
600
500
IIN
400
IIN
300
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
1.255
1.250
VIN = VCC = 5V
C4 = 0.47µF
1.245
1.240
200
ICC
100
1.235
0
0
1
2
3
4
5
INPUT VOLTAGE (V)
1.230
0
20 40 60 80 100 120 140 160
REFERENCE LOAD CURRENT (µA)
OUTPUT VOLTAGE RIPPLE
LOAD-TRANSIENT RESPONSE
(ISET = VCC, ILIM = 500mA)
LOAD-TRANSIENT RESPONSE
(ISET = GND, ILIM = 250mA)
0mA
0mA
A
A
A
5mA
5mA
B
B
B
10µs/div
VOUT = +24V, ILOAD = 5mA
A: ISET = VCC, 20mV/div
B: ISET = GND, 20mV/div
200µs/div
VOUT = +24V, ISET = VCC
A: LOAD CURRENT, 0mA TO 5mA, 2.5mA/div
B: VOUT, AC-COUPLED, 10mV/div
SHUTDOWN TRANSIENT
(POSITIVE CONFIGURATION)
5V
5V
SHDN
SHDN
0V
0V
100µs/div
VOUT = +24V, ISET = GND
A: LOAD CURRENT, 0mA TO 5mA, 2.5mA/div
B: VOUT, AC-COUPLED, 10mV/div
SHUTDOWN TRANSIENT
(NEGATIVE CONFIGURATION)
24V
0V
VOUT
0V
VOUT
-20V
50ms/div
VCC = VIN = 5V, RL = 4kΩ
250ms/div
SVTCACR=T-VUINP=D5EVL,ARYL, =VC4CkΩ= VIN = 5V, ILOAD = 5mA
4 _______________________________________________________________________________________
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