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Part: MAX8868C/DXY
Category:
Power Management
-> Regulators
-> Linear Regulators
Description: Low-noise, Low-dropout, 150ma Linear Regulators in Sot23
Company: Maxim Integrated Products
Datasheet: Download MAX8868C/DXY datasheet File size : 306 kB
Request For quote: Find where to buy MAX8868C/DXY
Datasheet text preview:
19-1302; Rev 1; 3/98
Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23
_______________General Description
The MAX8867/MAX8868 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the r a n g e of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin. D e s i g n e d with an internal P-channel MOSFET pass t r a n s i s t o r , the MAX8867/MAX8868 maintain 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 MAX8868 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in a miniature 5-pin SOT23 package.
____________________________Features
o Low Output Noise: 30µVRMS o Low 55mV Dropout at 50mA Output (165mV at 150mA 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 (±1.4% accuracy) o 10nA Logic-Controlled Shutdown
MAX8867/MAX8868
________________________Applications
Cellular Telephones Cordless Telephones PCS Telephones PCMCIA Cards Modems Hand-Held Instruments Palmtop Computers Electronic Planners
______________Ordering Information
PART** MAX8867C/Dxy MAX8867EUKxy-T MAX8868C/Dxy MAX8868EUKxy-T TEMP. RANGE 0°C to +70°C -40°C to +85°C 0°C to +70°C -40°C to +85°C PIN-PACKAGE Dice* 5 SOT23-5 Dice* 5 SOT23-5
__________________Pin Configuration
TOP VIEW
SHDN 1 5 BP
* Dice are tested at TA = +25°C. **xy is the output voltage code (see Expanded Ordering Information table).
___Expanded Ordering Information
OUTPUT VOLTAGE (xy) CODE MAX886_EUK25 PRESET OUTPUT VOLTAGE (V) 2.50 2.80 2.84 3.00 3.15 3.30 3.60 5.00 x.y0 SOT TOP MARK MAX8867 ACAY ACAZ ACBA ACBB ACBC ACBD ACCZ ACBE -- MAX8868 ACBF ACBG ACBH ACBI ACBJ ACBK ACDA ACBL --
GND 2
MAX8867 MAX8868
4 OUT
IN 3
SOT23-5
MAX886_EUK28 MAX886_EUK29 MAX886_EUK30 MAX886_EUK32 MAX886_EUK33 MAX886_EUK36 MAX886_EUK50 Other xy***
__________Typical Operating Circuit
INPUT 2.5V TO 6.5V IN CIN 1µF OUT COUT 1µF OUTPUT PRESET 2.5V TO 5.0V 150mA
MAX8867 MAX8868
SHDN CBP 0.01µF BP GND
ON
OFF
***Other xy between 2.5V and 5.0V are available in 100mV increments. Contact factory for other versions. Minimum order quantity is 25,000 units. 1
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 MAX8867/MAX8868
ABSOLUTE MAXIMUM RATINGS
IN to GND ...........-7V to +7V Output Short-Circuit Duration ...........Infinite SHDN to GND.....-7V to +7V SHDN to IN ......-7V to +0.3V OUT, BP to GND .........-0.3V to (VIN + 0.3V) Continuous Power Dissipation (TA = +70°C) SOT23-5 (derate 7.1mW/°C above +70°C)..........571mW Operating Temperature Range ...-40°C to +85°C Junction Temperature ......+150°C JB ..........140°C/W Storage Temperature Range .....-65°C to +160°C Lead Temperature (soldering, 10sec) .....+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VOUT(NOMINAL) + 0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Input Voltage (Note 2) Output Voltage Accuracy Maximum Output Current Current Limit Ground Pin Current ILIM IQ No load IOUT = 150mA IOUT = 1mA Dropout Voltage (Note 2) Line Regulation Load Regulation Output Voltage Noise SHUTDOWN SHDN Input Threshold SHDN Input Bias Current Shutdown Supply Current Shutdown Exit Delay (Note 3) Shutdown Discharge Resistance VIH VIL ISHDN IQ, SHDN VIN = 2.5V to 5.5V VIN = 2.5V to 5.5V VSHDN = VIN VOUT = 0V CBP = 0.1µF, COUT = 1µF, no load MAX8868 only TA = +25°C TA = +85°C TA = +25°C TA = +85°C TA = +25°C TA = -40°C to +85°C 300 0.01 0.5 0.01 0.2 30 150 300 1 2.0 0.4 100 V nA µA µs VLNR VLDR en IOUT = 50mA IOUT = 150mA VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA IOUT = 0mA to 120mA, COUT = 1µF f = 10Hz to 100kHz, CBP = 0.01µF COUT = 10µF COUT = 100µF -0.15 SYMBOL VIN IOUT = 0mA, TA = +25°C IOUT = 0mA to 120mA CONDITIONS MIN 2.5 -1.4 -3 150 160 390 85 100 1.1 55 165 0 0.01 30 20 0.15 0.04 %/V %/mA µVRMS 120 mV 180 TYP MAX 6.5 1.4 2 UNITS V % mA mA µA
2
_______________________________________________________________________________________
Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VOUT(NOMINAL) + 0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER THERMAL PROTECTION Thermal Shutdown Temperature Thermal Shutdown Hysteresis TSHDN TSHDN 155 15 °C °C SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX8867/MAX8868
Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) Methods. Note 2: The dropout voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT for VIN = VOUT + 0.5V. Note 3: Time needed for VOUT to reach 95% of final value.
__________________________________________Typical Operating Characteristics
(VIN = VOUT(NOMINAL) + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.)
MAX886_EUK25 OUTPUT VOLTAGE vs. LOAD CURRENT
MAX8867/8-01
MAX886_EUK50 OUTPUT VOLTAGE vs. LOAD CURRENT
MAX8867/8-02
GROUND PIN CURRENT vs. LOAD CURRENT
105 GROUND PIN CURRENT (µA) 100 95 90 85 80 75 70 65 MAX886_EUK25 MAX886_EUK50
MAX8867/8-03
2.60
5.2
110
OUTPUT VOLTAGE (V)
2.50
OUTPUT VOLTAGE (V)
2.55
5.1
5.0
2.45
4.9
2.40 0 50 100 150 LOAD CURRENT (mA)
4.8 0 50 100 150 LOAD CURRENT (mA)
60 0 50 100 150 LOAD CURRENT (mA)
MAX886_EUK25 GROUND PIN CURRENT vs. INPUT VOLTAGE
MAX8867/8-04
MAX886_EUK50 GROUND PIN CURRENT vs. INPUT VOLTAGE
ILOAD = 50mA 100 GROUND PIN CURRENT (µA) 80 NO LOAD 60 40 20 0
MAX8867/8-05
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX8867/8-06
120 ILOAD = 50mA 100 GROUND PIN CURRENT (µA) 80 60 40 20 0 0 1 2 3 4 5 NO LOAD
120
6 5 OUTPUT VOLTAGE (V) 4 3 2 1 0
MAX886_EUK50
MAX886_EUK25
6
0
1
2
3
4
5
6
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
_______________________________________________________________________________________
3
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