AMS6101 ADMOS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 Advanced AMS6101 Monolithic 2A SWITCH STEP-UP DC/DC CONVERTER Systems RoHS compliant FEATURES APPLICATIONS

  • 2A, 0.2Ω, internal switch • LCD TVs and LCD monitors
  • Operating voltage as low as 2.7V • Battery Chargers
  • 600 kHz operation frequency • Portable (Notebook) Computers
  • Over temperature protection • Handheld Devices
  • 8-Lead SOIC-EDP package • Portable Applications
  • Consumer Electronics
  • GSM/CDMA Phones
  • Digital Cameras GENERAL DESCRIPTION The AMS6101 is an adjustable step-up DC/DC converter with a 2A internal switch. With the ability to set the output voltage up to 23V, the AMS6101 is an ideal part for biasing TFT displays. The AMS6101 can be operated at switching frequencies of 600 kHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. The AMS6101 is available in a low profile 8-lead SOIC EDP (thermally enhanced) package. ORDERING INFORMATION PIN CONNECTIONS TYPICAL APPLICATION OUTPUT PACKAGE TYPE TEMP. VOLTAGE 8 Lead SOIC RANGE Adjustable AMS6101S -25°C to 125°C 8L SOIC FB COMP PGND VCC PGD SW EN AGND Top View

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6101 PIN DESCRIPTION AMS6101 PIN NUMBERS NAME DESCRIPTION 1 VCC Analog power input. 2 PWGD Power good output. Open collector output. A low on the pin indicates that the output is less than the desired output voltage. There is an internal rising filter on the output of the PWGD comparator. 3 SW Power switch input. Internal switch connected between SW pin and GND pin. 4 AGND Analog ground. 5 COMP Compensation network connection. Connected to the output of the voltage error amplifier. 6 F/B Feedback input pin of the error comparator. 7 PGND Power Ground-Noisy internal ground-Return currents from the power switch (SW). 8 EN Shutdown control input, active high.

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6101 ABSOLUTE MAXIMUM RATINGS (note 1) VCC 15V Maximum Junction Temperature 150°C SW Voltage 23V Power Dissipation (Note2) Internally Limited F/B Voltage 7V Lead Temperature 300°C Comp 7V Vapor Phase (60 sec) 215°C EN 7V Infrared (15 sec) 220°C PWGD 15V ESD Susceptibility 2kV

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at TA= 25 °C, VIN=2.7V, IL = 0A (unless otherwise noted) PARAMETER TEST CONDITIONS AMS6101 Min. Typ. Max. (Note3) (Note4) (Note3) Units Quiescent Current FB = 0V (Not Switching) V EN = 0V 1.3 2.0 mA µA Feedback Voltage 1.2285 1.26 1.2915 V Switch Current Limit VIN = 2.7 (Note 5) 3 4 A Load Regulation VIN = 3.3V 6.7 mV/mA Feedback Voltage Line Regulation 2.0V ≤ VIN ≤ 12.0V 0.013 0.1 %V FB Pin Bias Current 0.5 20 nA Input Voltage Range 2.5 15 V Error Amp Transconductance ∆I = 5µA 40 135 290 µmho Error Amp Voltage Gain 135 V/V Maximum Duty Cycle 78 85 % Switching Frequency 480 600 720 kHz Shutdown Pin Current V EN = VIN V EN = 0V 0.01 -0.5 0.1 µA Switch Leakage Current V SW = 18V 0.01 3 µA Switch RDSON VIN = 2.7V, I SW = 1A 0.2 0.4 Ω Enable Threshold Output High Output Low 0.9 0.6 0.6 0.3 V V On Threshold 1.8 1.92 2.0 V Off Threshold 1.7 1.82 1.9 V Thermal Resistance Ju nction to Ambient 195 Note: 1). Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to be functional. 2). The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to- ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD (MAX) = (TJ (MAX) – TA) θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. 3). All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). 4). Typical numbers are at 25°C and represent the most likely norm. 5). Current limit at 0% duty cycle.

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6101 TYPICAL PERFORMANCE CHARACTERISTICS Full Load Switching Full Load Ripple (Wide Band) Start Up from Enable into Full Load Start Up from Enable into Light Load Switch Full Load Rise Time Switch Full Load Fall Time Efficiency for 5V input and 12V Output Efficiency Load Current

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6101 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.

8 LEAD SOIC PLASTIC PACKAGE (S)

0°-8 ° TYP 0.010-0.020 (0.254-0.508) S (SO- 8 ) AMS DRW # 042293 x 45° 0.016-0.050 (0.406-1.270) 0.008-0.010 (0.203-0.254) 0.004-0.010 (0.101-0.254) 0.014-0.019 (0.355-0.483) 0.053-0.069 (1.346-1.752) 0.050 (1.270) TYP 0.150-0.157** (3.810-3.988) 0.228-0.244 (5.791-6.197) 0.189-0.197* (4.801-5.004) 12 34 87 65 12 34 87 65 0.090 (2.28) 0.102 (2.59) 0.123 (3.12) 0.137 (3.48) 0.138 (3.50) 0.063(1.60) *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE RECOMMENDED LAYOUT PATTERN