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PDF MAX8512EXK-T Data sheet ( Hoja de datos )
| Número de pieza | MAX8512EXK-T | |
| Descripción | Ultra-Low-Noise / High PSRR / Low-Dropout /120mA Linear Regulators in SC70 | |
| Fabricantes | Maxim Integrated | |
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19-2732; Rev 0; 1/03
EVAALVUAAILTAIOBNLEKIT
Ultra-Low-Noise, High PSRR,
Low-Dropout,120mA Linear Regulators in SC70
General Description
The MAX8510/MAX8511/MAX8512 ultra-low-noise, low-
dropout (LDO) linear regulators are designed to deliver up
to 120mA continuous output current from a tiny 5-pin
SC70 plastic package. These regulators achieve a low
120mV dropout for 120mA load current. The MAX8510
uses an advanced architecture to achieve ultra-low output
voltage noise of 11µVRMS and PSRR of 54dB at 100kHz.
The MAX8511 does not require a bypass capacitor,
hence achieving the smallest PC board area. The
MAX8512’s output voltage can be adjusted with an
external divider.
The MAX8510/MAX8511 are preset to a variety of volt-
ages in the 1.5V to 4.5V range. Designed with a P-
channel MOSFET series pass transistor, the MAX8510/
MAX8511/MAX8512 maintain very low ground current
(40µA).
The regulators are designed and optimized to work with
low-value, low-cost ceramic capacitors. The MAX8510
requires only 1µF (typ) of output capacitance for stability
with any load. When disabled, current consumption drops
to below 1µA.
Applications
Cellular and Cordless Phones
PDA and Palmtop Computers
Base Stations
Bluetooth Portable Radios and Accessories
Wireless LANs
Digital Cameras
Personal Stereos
Portable and Battery-Powered Equipment
Typical Operating Circuits
Features
o Space-Saving 5-Pin SC70 Package
o 11µVRMS Output Noise at 100Hz to 100kHz
Bandwidth (MAX8510)
o 78dB PSRR at 1kHz (MAX8510)
o 120mV Dropout at 120mA Load
o Stable with 1µF Ceramic Capacitor for Any Load
o Guaranteed 120mA Output
o Only Need Input and Output Capacitors (MAX8511)
o Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 3V, 3.3V, 4.5V (MAX8510/MAX8511) and
Adjustable (MAX8512)
o Low 40µA Ground Current
o Excellent Load/Line Transient
o Overcurrent and Thermal Protection
Ordering Information
PART*
TEMP RANGE PIN-PACKAGE
MAX8510EXKxy-T -40°C to +85°C 5 SC70-5
MAX8511EXKxy-T -40°C to +85°C 5 SC70-5
MAX8512EXK-T
-40°C to +85°C 5 SC70-5
*xy is the output voltage code (see Output Voltage Selector
Guide). Other versions between 1.5V and 4.5V are available in
100mV increments. Contact factory for other versions.
Output Voltage Selector Guide appears at end of data sheet.
Pin Configuration
INPUT
2V TO 6V
CIN = 1µF
ON
OFF
OUTPUT PRESET
1.5V TO 4.5V
IN OUT
MAX8510
SHDN
BP CBP = 10nF
COUT = 1µF
GND
Typical Operating Circuits continued at end of data sheet.
TOP VIEW
IN 1
5 OUT
GND 2
SHDN 3
MAX8510
MAX8511
MAX8512
SC70-5
BP (MAX8510)
4 N.C. (MAX8511)
FB (MAX8512)
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Ultra-Low-Noise, High PSRR, Low-Dropout,
120mA Linear Regulators in SC70
Typical Operating Characteristics (continued)
(VIN = VOUT + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 10nF, TA = +25°C, unless otherwise noted.)
MAX8510
OUTPUT NOISE vs. BP CAPACITANCE
25
MAX8510
LOAD TRANSIENT RESPONSE
MAX8510 toc14
MAX8510
LOAD TRANSIENT RESPONSE NEAR DROPOUT
MAX8510 toc15
20
VIN = 3.5V
VIN = 3.1V
ILOAD = 0 TO 50mA
ILOAD = 0 TO 50mA
15
10
VOUT
VOUT
10mV/div
10mV/div
5
0
1 10 100
BP CAPACITANCE (nF)
MAX8510
LINE TRANSIENT RESPONSE
MAX8510 toc16
VIN = 3.5V TO 4V
1ms/div
MAX8510
EXITING SHUTDOWN WAVEFORM
MAX8510 toc17
SHUTDOWN VOLTAGE
VOUT = 2.85V
RLOAD = 47Ω
1ms/div
MAX8510
ENTERING SHUTDOWN DELAY
MAX8510 toc18
CBP = 0.01µF
SHUTDOWN
VOLTAGE
200µs/div
VOUT
2mV/div
OUTPUT VOLTAGE
2V/div
20µs/div
MAX8510
SHUTDOWN EXIT DELAY
MAX8510 toc19
VOUT = 3V
CBP = 100nF
VOUT
1V/div
OUTPUT VOLTAGE
2V/div
40µs/div
MAX8510
REGION OF STABLE COUT ESR
vs. LOAD CURRENT
100
10
SHUTDOWN
VOLTAGE
20µs/div
1
0.1
STABLE REGION
0.01
0
20 40 60 80 100 120
LOAD CURRENT (mA)
_______________________________________________________________________________________ 5
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| PDF Descargar | [ Datasheet MAX8512EXK-T.PDF ] | |
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