TPL6305 3PEAK | Alldatasheet

Document overview

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  • PDF pages: 20

Technical content

Features

  • Input Voltage Range: 1.4 V to 6.5 V
  • Adjustable Output Voltage: 0.5 V to 5.2 V
  • ±2% Accuracy over Line Regulation, Load Regulation, and Operating Temperature Range
  • 3-A Maximum Output Current
  • Low Dropout Voltage: 300-mV Maximum at 3 A
  • Output Enable Control
  • Inherent Output Soft Start Control
  • Excellent Transient Response
  • High PSRR: – 63 dB at 1 kHz – 35 dB at 100 kHz
  • 24-μVRMS Output Voltage Noise (100 Hz to 100 kHz)
  • Stable with a 10-μF Ceramic Output Capacitor
  • Protection: – Over-Current Protection – Over-Temperature Protection – Output Short-to-Ground Protection
  • Package: – ESOP8
  • RoHS Compliant

Applications

  • Communication Infrastructure
  • Telecom and Networking Cards
  • Motherboards and Peripheral Cards
  • Computing Systems

Description

The TPL6305 is a 3-A high-current, 1.4-V low-input voltage linear regulator with only 300-mV maximum ultra- low-dropout voltage at full-load condition. The TPL6305 supports adjustable output voltage ranging from 0.5 V to 5.2 V with an external resistor divider. Low-input voltage and ultra-low-dropout voltage make the TPL6305 the ideal power supply for applications requiring output voltage very close to the input voltage. The TPL6305 integrates an enable control function and provides a very low standby power dissipation. The TPL6305 also provides output soft-start control and excellent transient response. The TPL6305 provides a thermal-enhanced 8-pin ESOP package with guaranteed operating temperature ranging from −40°C to +125°C. Typical Application Circuit IN TPL6305 Adjustable Output C IN C OUT OUT EN FB GND C FF NC Digital I/O or VIN VIN VOUT TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 1 / 20 DA20221101A1

Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 2 / 20 DA20221101A1

Part Number Output Voltage (V) Package TPL6305 Adjustable (0.5 V to 5.2 V) ESOP8

Revision History

2022-05-15 Rev.Pre.0 Preliminary Revision. 2022-10-31 Rev.Pre.1 Updated Electrical Characteristics and Typical Performance Characteristics. 2022-12-22 Rev.A.0 Initial Released. 2024-03-30 Rev.A.1 Updated thermal information. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 3 / 20 DA20221101A1

Table 1. Pin Functions: TPL6305 the regulator. The EN pin must not be left floating.

7 FB I

regulator transient performance. 8 GND - Ground reference pin. Connect the GND pin to the PCB ground plane directly.

3 IN I

1, 4, 5 NC - Not connected internally. ground (as close as possible to OUT pin) is required to ensure regulator stability.

Absolute Maximum Ratings (1) Parameter Min Max Unit IN, EN −0.3 7 V OUT, FB −0.3 VIN + 0.3 V TJ Junction Temperature Range −40 150 °C TSTG Storage Temperature Range −65 150 °C TL Lead Temperature (Soldering 10 sec) 260 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. (2) All voltage values are with respect to GND. ESD, Electrostatic Discharge Protection Parameter Condition Minimum Level Unit HBM Human Body Model ESD ANSI/ESDA/JEDEC JS-001 (1) ±4 kV CDM Charged Device Model ESD ANSI/ESDA/JEDEC JS-002 (2) ±1.5 kV (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Recommended Operating Conditions Parameter Min Typ Max Unit IN Input Voltage 1.4 6.5 V EN Enable Voltage 0 6.5 V COUT Output Capacitor 10 µF CFF Feed-forward Capacitor 10 nF TJ Junction Temperature Range −40 125 °C Thermal Information Package Type θJA θJB θJC,TOP Unit ESOP8 31.66 10.27 45.44 °C/W TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 5 / 20 DA20221101A1

Electrical Characteristics

All test conditions: TJ = −40°C to +125°C (typical value at T J = +25°C), VIN = VOUT(NOM) + 0.4 V or 1.4 V, whichever is greater; VEN = 1.1 V, VOUT(NOM) = 0.5 V, IOUT = 1 mA, CIN = 10 µF, COUT = 10 µF, CFF = open, unless otherwise noted. Parameter Conditions Min Typ Max Unit Supply Voltage and Current VIN Supply Voltage Range (1) VIN(MIN) 6.5 V UVLO Input Supply UVLO VIN rising, RL = 1 kΩ 1.39 V Hysteresis 200 mV IGND GND Current VIN = 6.5 V, IOUT = 5 mA 5 15 mA VIN = 6.5 V, IOUT = 3 A 5 15 mA ISD Shutdown Current VIN = 6.5 V, VEN = 0 V 68 µA Device Enable VIH(EN) EN High-level Input Voltage Device enable 1.1 6.5 V VIL(EN) EN Low-level Input Voltage Device disable 0 0.4 V IEN EN Leakage Current VIN = 6.5 V, VEN = 0 V to 6.5 V −0.5 0.5 µA Regulated Output Voltage and Current VFB Feedback Voltage −2% 0.5 +2% V IFB FB Pin Leakage Current VIN = 6.5 V, stress VFB = 0.5 V −100 100 nA VOUT Output Accuracy (2) VIN = VOUT(NOM) + 0.4 V or 1.4 V to 6.5 V, VOUT = 0.5 V to 5.2 V, IOUT = 5 mA to 3 A –2% +2% ΔVOUT Line Regulation VIN = 1.4 V to 6.5 V, IOUT = 5 mA 0.03 mV/V Load Regulation IOUT = 5 mA to 3 A 0.08 mV/A VDO Dropout Voltage (3) VIN = 1.4 V, IOUT = 1 A, VFB = 0.5 V – 3% 40 100 mV VIN = 1.4 V, IOUT = 2 A, VFB = 0.5 V – 3% 80 200 mV VIN = 1.4 V, IOUT = 3 A, VFB = 0.5 V – 3% 140 300 mV VIN = 5.4 V, IOUT = 3 A, VFB = 0.5 V – 3% 145 300 mV VIN = 5.6 V, IOUT = 3 A, VFB = 0.5 V – 3% 145 300 mV ILIM Output Current Limit VIN = 1.4 V, VOUT = 0.9 × VOUT(NOM) 3.7 4.7 A ISC Short Circuit to Ground Current Limit Protection VOUT is forced to ground, TA = 25°C 3 A tSTR Start-up Time VOUT = 0% to 90% of VOUT(NOM) 1 ms PSRR Power Supply Ripple Rejection VIN = 5.5 V, VOUT= 5.2 V, IOUT = 2 A, f = 1 kHz 63 dB VIN = 5.5 V, VOUT= 5.2 V, IOUT = 2 A, f = 100 kHz 35 dB VN Output Noise Voltage VIN = 1.4 V, VOUT= 0.5 V, IOUT = 2 A, BW =

100 Hz to 100 kHz 24 μVRMS

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Parameter Conditions Min Typ Max Unit Temperature Range TSD Thermal Shutdown Threshold Temperature increasing 160 °C Hysteresis 20 °C (1) VIN(MIN) = VOUT(NOM) + VDO or 1.4 V, whichever is greater. (2) Resistor tolerance is not included. Output accuracy is not tested at this condition: VOUT = 0.5 V, 2.3 V ≤ VIN ≤ 6.5 V, and 500 mA ≤ IOUT ≤ 3 A, because the power dissipation is out of package limitation. (3) Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current and measure for VOUT(NOM) ≥ 1.4 V. In the dropout mode, the output voltage VOUT will be equal to VIN – VDO . TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 7 / 20 DA20221101A1

voltage very close to the input voltage. provides output soft-start control and excellent transient response. Figure 13. Functional Block Diagram the VEN ramps above VIH(EN) , the LDO device turns on. The TPL6305 uses an under-voltage lockout circuit to keep the output shut off until the internal circuitry operates properly. Refer to the Electrical Characteristics table for the UVLO threshold and hysteresis. the external resistor R1 and R2 in Figure 15. Use Equation 1 to calculate the output voltage.

Where, the feedback voltage VFB is 0.5 V. Table 1 provides a list of recommended resistor combinations to achieve the common output voltage values. Table 2. External Resistor Combinations The TPL6305 integrates an internal current limit that helps to protect the regulator during fault conditions.

  • When the output voltage is pulled down below the regulated voltage, over-current protection starts to work and limit the output current to ILIM.
  • When the output voltage is pulled down below the short-to-ground threshold (about 140 mV), or shorted to ground directly, short-to-ground protection starts to work and limit the output current to ISC.
  • During startup, the output current is limited to ISC before the output voltage ramps higher than the short-to-ground threshold. Under the over-current conditions, the internal junction temperature ramps up quickly. When the junction temperature is high enough, it will cause the over-temperature protection. Over-Temperature Protection The over-temperature protection starts to work when the junction temperature exceeds the thermal shutdown (TSD) threshold, which turns off the regulator immediately. Until when the device cools down and the junction temperature falls below the value which equals to thermal shutdown threshold minus thermal shutdown hysteresis, the regulator turns on again. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 11 / 20 DA20221101A1

The junction temperature range should be limited according to the Recommended Operating Conditions table, continuously operating above the junction temperature range will reduce the device lifetime. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 12 / 20 DA20221101A1

The power dissipation can be calculated using Equation 2. PD = VIN − VOUT × IOUT + VIN × IGND (2) The junction temperature can be estimated using Equation 3. θJA is the junction-to-ambient thermal resistance. TJ = TA + PD × θJA (3) TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 14 / 20 DA20221101A1

  • Both input capacitors and output capacitors must be placed to the device pins as close as possible, and the vias between capacitors and device power pins must be avoided.
  • It is recommended to bypass the input pin to ground with a 0.1-μF bypass capacitor. The loop area formed by the bypass capacitor connection, the IN pin and the GND pin of the system must be as small as possible.
  • It is recommended to use wide and thick copper to minimize I×R drop and heat dissipation.
  • Exposed pad must be connected to the PCB ground plane directly, the copper area must be as large as possible. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 15 / 20 DA20221101A1

Order Number Package D1 (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) W0 (mm) Pin1 Quadrant TPL6305AD- TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 16 / 20 DA20221101A1

Package Outline Dimensions ESOP8-F TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 17 / 20 DA20221101A1

Order Number Operating Temperature Range Package Marking Information MSL Transport Media, Quantity Eco Plan TPL6305AD-ES1R −40°C to +125°C ESOP8 L635A MSL3 Tape and Reel, 4,000 Green Green: 3PEAK defines "Green" to mean RoHS compatible and free of halogen substances. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 18 / 20 DA20221101A1

IMPORTANT NOTICE AND DISCLAIMER Copyright© 3PEAK 2012-2024. All rights reserved. Trademarks. Any of the 思瑞浦 or 3PEAK trade names, trademarks, graphic marks, and domain names contained in this document /material are the property of 3PEAK. You may NOT reproduce, modify, publish, transmit or distribute any Trademark without the prior written consent of 3PEAK. Performance Information. Performance tests or performance range contained in this document/material are either results of design simulation or actual tests conducted under designated testing environment. Any variation in testing environment or simulation environment, including but not limited to testing method, testing process or testing temperature, may affect actual performance of the product. Disclaimer. 3PEAK provides technical and reliability data (including data sheets), design resources (including reference designs), application or other design recommendations, networking tools, security information and other resources "As Is". 3PEAK makes no warranty as to the absence of defects, and makes no warranties of any kind, express or implied, including without limitation, implied warranties as to merchantability, fitness for a particular purpose or non-infringement of any third- party’s intellectual property rights. Unless otherwise specified in writing, products supplied by 3PEAK are not designed to be used in any life-threatening scenarios, including critical medical applications, automotive safety-critical systems, aviation, aerospace, or any situations where failure could result in bodily harm, loss of life, or significant property damage. 3PEAK disclaims all liability for any such unauthorized use. TPL6305 Low-Input, Low-Dropout, 3-A Linear Regulator with Enable Control www.3peak.com 19 / 20 DA20221101A1

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