ADPL40502 AD | Alldatasheet
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analog.com Rev. 0 2 of 17 TABLE OF CONTENTS REVSION HISTORY REVISION NUMBER REVISION DATE DESCRIPTION PAGE NUMBER 0 12/24 Initial release —
Table 1. Electrical Characteristics
nominal output voltage. This voltage applies only for output voltages above 2.2V. 3 Start-up time is defined as the time between the rising edge of EN and VOUT being at 90% of its nominal value. Table 2. Input and Output Capacitor, Recommended Specifications
TA = 25°C, unless otherwise specified. Table 3. Absolute Maximum Ratings Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. for extended periods may affect product reliability. ambient temperature may have to be derated. ambient thermal resistance of the package (θJA). detailed information on the board construction.
See JESD51-8 and JESD51-12 for more detailed information about ΨJB. Table 4. Thermal Resistance
Figure 3. 5-Lead TSOT Pin Configuration Figure 4. 6-Lead LFCSP Pin Configuration Table 5. Pin Descriptions turn off the regulator. For automatic startup, connect EN to VIN. 4 2 NC No Connect. Not connected internally. applicable 5 NC No Connect. Not connected internally. exposed pad enhances the thermal performance of the package.
- NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
- THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
6 VIN
the ADPL40502 ideal for battery operated, portable equipment. Shutdown current consumption is typically 0.2µA. gate of the PMOS device pulls higher, allowing less current to pass and decreasing the output voltage. An internal pull-down resistor on the EN input holds the input low when the pin is left open. EN is low, VOUT turns off. For automatic startup, tie EN to VIN. curves are available from all major ceramic capacitor vendors. Figure 23. Output Transient Response, COUT = 1µF
analog.com Rev. 0 13 of 17 The ADPL40502 uses an internal soft start to limit the inrush current when the output is enabled. The start -up time for the 3.3V option is approximately 180µs from the time the EN active threshold is crossed to when the output reaches 90% of its final value. Figure 26 shows typical EN active and inactive thresholds when the input voltage varies from 2.2V to 5.5V. Figure 26.Typical Start-Up Behavior Current-Limit and Thermal Overload Protection The ADP40502 is protected against damage due to excessive power dissipation by current and thermal overload protection circuits. The ADPL40502 is designed to current limit when the output load reaches 300mA (typical). When the output load exceeds 300mA, the output voltage is reduced to maintain a constant current limit. Thermal overload protection is included, which limits the junction temperature to a maximum of 150°C (typical). Under extreme conditions (i.e., high ambient temperature and power dissipation) when the junction temperature starts to rise above 150°C, the output is turned off, reducing the output current to 0. When the junction temperature drops below 135°C, the output is turned on again, and the output current is restored to its nominal value. Consider the case where a hard short from VOUT to ground occurs. At first, the ADPL40502 current limits, so that only 300mA is conducted into the short. If self heating of the junction causes its temperature to rise above 150°C, thermal shutdown activates, turning off the output and reducing the outpu t current to 0. As the junction temperature cools and drops below 135°C, the output turns on and conducts 300mA into the short, again causing the junction temperature to rise above 150°C. This thermal oscillati on between 135°C and 150°C causes a current oscillation between 300mA and 0mA that continues as long as the short remains at the output. Current-limit and thermal limit protections protect the device against accidental overload conditions. For reliable operation, device power dissipation must be externally limited so that junction temperatures do not exceed 125°C. 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 45040035030025020015010050 ENABLE VOLTAGE TIME (µs) ENABLE 3.3V 2.8V 030
Figure 29. 5-Lead, Thin Small Outline Transistor Package [TSOT] (UJ-5) Dimensions shown in millimeters Figure 30. 6-Lead, Lead Frame Chip Scale Package [LFCSP] 2mm × 2mm Body and 0.55mm Package Height (CP-6-3)
0.95 BSC
1.90 REF
0.10 MAX
1.00 MAX
0.20 REF
0.05 MAX
0.02 NOM
0.65 BSC
0.15 MIN
analog.com Rev. 0 16 of 17 ORDERING GUIDE Table 6. Ordering Guide
DESCRIPTION
ADPL40502ACPZ-1.2-R7 -40°C to +125°C 6-Lead LFCSP (2mm x 2mm w/ EP) Reel, 3000 ADPL40502ACPZ-1.8-R7 -40°C to +125°C 6-Lead LFCSP (2mm x 2mm w/ EP) Reel, 3000 ADPL40502ACPZ-2.5-R7 -40°C to +125°C 6-Lead LFCSP (2mm x 2mm w/ EP) Reel, 3000 ADPL40502ACPZ-3.0-R7 -40°C to +125°C 6-Lead LFCSP (2mm x 2mm w/ EP) Reel, 3000 ADPL40502ACPZ-3.3-R7 -40°C to +125°C 6-Lead LFCSP (2mm x 2mm w/ EP) Reel, 3000 ADPL40502AUJZ-1.2-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-1.5-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-1.8-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-2.5-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-2.8-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-3.0-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 ADPL40502AUJZ-3.3-R7 -40°C to +125°C 5-Lead TSOT Reel, 3000 Output Voltage Options Table 7. Output Voltage Options 2 For additional voltage options, contact a local Analog Devices, Inc., sales or distribution representative.
ALL INFORMATION CONTAINED HEREIN IS PROVIDED “AS IS” WITHOUT REPRESENTATION OR WARRANTY. NO RESPONSIBILITY IS ASSUMED BY ANALOG DEVICES FOR ITS USE, NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THIRD PARTIES THAT MAY RESULT FROM ITS USE. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. NO LICENCE, EITHER EXPRESSED OR IMPLIED, IS GRANTED UNDER ANY ADI PATENT RIGHT, COPYRIGHT, MASK WORK RIGHT, OR ANY OTHER ADI INTELLECTUAL PROPERTY RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS, IN WHICH ADI PRODUCTS OR SERVICES ARE USED. TRADEMARKS AND REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS. ALL ANALOG DEVICES PRODUCTS CONTAINED HEREIN ARE SUBJECT TO RELEASE AND AVAILABILITY. analog.com Rev. 0 17 of 17