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PDF MAX1598 Data sheet ( Hoja de datos )
| Número de pieza | MAX1598 | |
| Descripción | Low-Noise / Low-Dropout / 200mA Linear Regulator | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-2584; Rev 0; 10/02
Low-Noise, Low-Dropout, 200mA
Linear Regulator
General Description
The MAX1598 low-noise, low-dropout linear regulator
operates from a 2.5V to 6.5V input and delivers up to
200mA. Typical output noise is 30µVRMS, and typical
dropout is only 236mV at 200mA. The output voltage is
preset to voltages from 2.5V to 5V in 100mV increments.
Designed with an internal P-channel MOSFET pass
transistor, the MAX1598 maintains a low 100µA supply
current independent of the load current and dropout
voltage. Other features include a 10nA logic-controlled
shutdown mode, short-circuit and thermal-shutdown
protection, and reverse battery protection. The device
also includes an autodischarge function, which actively
discharges the output voltage to ground when the
device is placed in shutdown. The MAX1598 comes in
a thin 5-pin SOT23 package.
Features
o 200mA Output Current
o Low Output Noise: 30µVRMS
o Low 55mV Dropout at 50mA Output
o Low 85µA No-Load Supply Current
o Low 100µA Operating Supply Current,
Even in Dropout
o Thermal-Overload and Short-Circuit Protection
o Reverse Battery Protection
o Output Current Limit
o Preset Output Voltages
o 10nA Logic-Controlled Shutdown
Applications
Cellular, Cordless, and PCS Phones
PCMCIA Cards
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1598EZKxy-T* -40°C to +85°C Thin SOT23-5
*xy is the output voltage code (see the Selector Guide at end of
data sheet).
Typical Operating Circuit
INPUT
2.5V TO 6.5V
CIN
1µF
IN OUT
MAX1598
COUT
2.2µF
ON
OFF
SHDN
BP
CBP
0.01µF
GND
OUTPUT
PRESET
2.5V TO 5V
200mA
Pin Configuration
TOP VIEW
IN 1
5 OUT
MAX1598
GND 2
SHDN 3
4 BP
THIN SOT23-5
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Low-Noise, Low-Dropout, 200mA
Linear Regulator
Typical Operating Characteristics (continued)
(VIN = (VOUT(NOMINAL) + 0.5V) or 2.5V (whichever is greater), CIN = 1µF, COUT = 2.2µF, CBP = 0.01µF, TA = +25°C, unless other-
wise noted.)
OUTPUT NOISE 10Hz TO 100kHz
REGION OF STABLE COUT ESR
vs. LOAD CURRENT
100
VOUT
50µV/div
10 COUT = 10µF
1
STABLE REGION
0.1
COUT = 2.2µF
1ms/div
MAX1598EZK25, COUT = 10µF, ILOAD = 10mA, CBP = 0.1µF
0.01
0
50 100 150
LOAD CURRENT (mA)
200
LINE-TRANSIENT RESPONSE
MAX1598-18
LOAD-TRANSIENT RESPONSE
MAX1598-19
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1598-20
4V 3.01V
3.01V
3V
VIN 3.00V
VOUT
3.00V
VOUT
2.99V
2.99V
3.001V
3.000V
2.999V
VOUT 50mA
ILOAD
50mA
ILOAD
100µs/div
MAX1598EZK30, ILOAD = 50mA
MAX1598EZK25
SHUTDOWN EXIT DELAY
MAX1598-21
10µs/div
MAX1598EZK30, VIN = VOUT + 0.5V,
CIN = 10µF, ILOAD = 0 TO 50mA
MAX1598EZK50
SHUTDOWN EXIT DELAY
MAX1598-22
2V
VSHDN
2V
VSHDN
0V CBP = 0.01µF
0V CBP = 0.01µF
2V
VOUT 4V
CBP = 0.1µF
VOUT
1V CBP = 0.1µF
2V
0V
5µs/div
ILOAD = 50mA
0V
5µs/div
ILOAD = 50mA
10µs/div
MAX1598EZK30, VIN = VOUT + 0.1V,
CIN = 10µF, ILOAD = 0 TO 50mA
ENTERING SHUTDOWN
MAX1598-23
VSHDN
2V
0V
5V
0V
500µs/div
NO LOAD
VOUT
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAX1598.PDF ] | |
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