IC REG LINEAR 3.6V 150MA SOT23-5
LP2985 is a 150-mA Low-noise Low-dropout Regulator With Shutdown. This passage mainly introduce its pinout, application, package and other detailed information about Texas Instruments LP2985.
LP2985 Low-Dropout Regulator: Pinout, Application and Package
IC REG LINEAR 3.6V 150MA SOT23-5 LP2985 is a 150-mA Low-noise Low-dropout Regulator With Shutdown.
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Jul 13, 2021
Enid Stephen
LP2985IM5-3.6
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LP2985 Description
The LP2985 series of fixed output, low-dropout regulators provide excellent, cost-effective performance for portable and non-portable applications. This series provides 1.8 V, 2.5 V, 2.8 V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V and 10 V voltage, the output tolerance of A version is 1% (A version is 1.5%) non-A version ) And can provide a continuous load current of 150mA. Includes standard regulator functions such as overcurrent and overheat protection.
LP2985 Pinout
LP2985 CAD Model
Symbol
Footprint
3D Model
LP2985 Features
● Output tolerance
– 1% (Grade A)
– 1.5% (standard grade)
●Ultra low pressure drop, usually
– 280 mV at 150 mA full load
– 7 mV at 1 mA
● Wide VIN range: up to 16 V
● Low IQ: 850 μA at full load at 150 mA
● Shut-off current: 0.01 μA (typical value)
● Low noise: 30μVRMS with 10nF bypass capacitor
● Stable low ESR capacitors, including ceramic
● Overcurrent and thermal protection
● High peak current capability
● ESD protection exceeds JESD 22
– 2000-V Human Body Model (A114-A)
– 200-V machine model (A115-A)
Specifications
Texas Instruments LP2985IM5-3.6 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LP2985IM5-3.6.
LP2985IM5-3.6 Tech Specifications
LP2985IM5-3.6 Tech Specifications
Texas Instruments LP2985IM5-3.6 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LP2985IM5-3.6.
| Product Attribute | Attribute Value | |
|---|---|---|
| Mount | Surface Mount | |
| Mounting Type | Surface Mount | |
| Package / Case | SC-74A, SOT-753 | |
| Number of Pins | 5Pins | |
| Voltage Rated | 3.6V | |
| Operating Temperature | -40°C~125°C | |
| Packaging | Tape & Reel (TR) | |
| JESD-609 Code | e0 | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 5Terminations | |
| ECCN Code | EAR99 | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Packing Method | TAPE AND REEL | |
| Terminal Position | DUAL |
| Product Attribute | Attribute Value | |
|---|---|---|
| Terminal Form | GULL WING | |
| Peak Reflow Temperature (Cel) | 260 | |
| Number of Functions | 1Function | |
| Base Part Number | LP2985 | |
| Pin Count | 5 | |
| Current - Supply (Max) | 2.5mA | |
| Number of Outputs | 1Output | |
| Output Voltage | 3.6V | |
| Output Type | Fixed | |
| Max Output Current | 150mA | |
| Voltage | 16V | |
| Output Configuration | Positive | |
| Quiescent Current | 65μA | |
| Control Features | Enable | |
| Accuracy | 3 % |
| Product Attribute | Attribute Value | |
|---|---|---|
| Output Voltage 1 | 3.6V | |
| Number of Regulators | 1Regulator | |
| Min Input Voltage | 2.5V | |
| Protection Features | Over Current, Over Temperature, Short Circuit | |
| Current - Quiescent (Iq) | 95μA | |
| Voltage Dropout (Max) | 0.58V @ 150mA | |
| PSRR | 45dB (1kHz) | |
| Dropout Voltage | 280mV | |
| Dropout Voltage1-Nom | 0.28V | |
| Output Voltage Accuracy | 3 % | |
| Length | 2.92mm | |
| Radiation Hardening | No | |
| RoHS Status | Non-RoHS Compliant | |
| Lead Free | Contains Lead |
LP2985 Functional Block Diagram
LP2985 Layout Example
How to use LP2985?
The LP2985 low dropout voltage regulator is available in a 5-pin package. In the LP2985 regulator, an additional bypass pin is introduced to further reduce the output noise. This pin is connected to ground through an optional 10nf capacitor. The Vin pin is connected to the input power supply, and a 1µf ceramic capacitor is used to eliminate input noise. The regulated voltage is obtained from the Vout pin. The enable pin can be used to turn the regulator on or off, which helps designers turn off the regulator when not in use and prevents battery usage.
LP2985 Typical Application
LP2985 Package
LP2985 Manufacturer
Texas Instruments (TI) is an American technology company headquartered in Dallas, Texas, which designs and manufactures semiconductors and various integrated circuits, and sells them to electronic designers and manufacturers worldwide. It is one of the top 10 semiconductor companies in global sales. The company focuses on the development of analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and educational technology products, including calculators, microcontrollers and multi-core processors. As of 2016, the company has 45,000 patents worldwide.
Datasheet PDF
Download datasheets and manufacturer documentation for Texas Instruments LP2985IM5-3.6.
LP2985IM5-3.6 Documents
LP2985IM5-3.6 Documents
Download datasheets and manufacturer documentation for LP2985IM5-3.6
Datasheets
LP2985-N Datasheet
Frequently Asked Questions
1.I used LP2985 and LP2987 chips to convert the output voltage to 5V and 3.3V respectively. Why did the output increase by 800mV to 5.8V and 4.1V? ?
It may be that the measurement point of the grounded probe is a bit far away from the ground pins of the two chips. For some reason, the ground wire of this distance has a voltage drop of 0.8V, which is superimposed during the measurement. You should be on the chip Measure near the pin. If this is not the case, either the error of the chip itself or the multimeter.
2.Why do Arduino UNO boards heat up while connecting it to a 12V battery for supply?
Arduino uno has LDO called LP2985 which regulates power supply to 3.3 volts. typically it takes 5V DC suplly (either from USB cable or Dc connector) and converts to 3.3V so the conversion has less heat value as 5–3.3 = 1.7 v (less heat) but because you are connecting it to 12 V DC supply the it has to convert 12–3.3 = 8.7 V(more heat) which is done by heat dissipation. Thats why its heating too much. The less voltage you regulate the less heat will be generate.
3.Can LP2985 chip work normally under 16V voltage input?
It can work normally, but the premise is that the output current cannot be too large, because you use the highest input voltage, whether you output 3.3V or 5V, the voltage difference is very large
FAQ
1.I used LP2985 and LP2987 chips to convert the output voltage to 5V and 3.3V respectively. Why did the output increase by 800mV to 5.8V and 4.1V? ?
It may be that the measurement point of the grounded probe is a bit far away from the ground pins of the two chips. For some reason, the ground wire of this distance has a voltage drop of 0.8V, which is superimposed during the measurement. You should be on the chip Measure near the pin. If this is not the case, either the error of the chip itself or the multimeter.
2.Why do Arduino UNO boards heat up while connecting it to a 12V battery for supply?
Arduino uno has LDO called LP2985 which regulates power supply to 3.3 volts. typically it takes 5V DC suplly (either from USB cable or Dc connector) and converts to 3.3V so the conversion has less heat value as 5–3.3 = 1.7 v (less heat) but because you are connecting it to 12 V DC supply the it has to convert 12–3.3 = 8.7 V(more heat) which is done by heat dissipation. Thats why its heating too much. The less voltage you regulate the less heat will be generate.
3.Can LP2985 chip work normally under 16V voltage input?
It can work normally, but the premise is that the output current cannot be too large, because you use the highest input voltage, whether you output 3.3V or 5V, the voltage difference is very large
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