Power Management GL6010 SERIES

Transcription

1 General Description Key Features The GL600 is a A CMOS LDO regulator that features a low quiescent current, ultra low input, output and dropout voltages, as well as over temperature shutdown. It is available in, and SOP-8(exposed pad) packages. The fixed output voltage of the GL600 is set at the factory and trimmed to ± 2%. The GL600 is stable with a ceramic output capacitor of.0uf or higher. This family of regulators can provide either a standalone power supply solution or act as a post regulator for switch mode power supplies. They are particularly well suited for applications requiring low input and output voltages. Low-Dropout Regulator Supports Input Voltages Down to.4v Output Voltage Available in 0.9V,.0V,.2V,.5V,.8V, 2.5V,2.8V,2.85V,3.0V, 3.3V Stable with a Ceramic Output Capacitor of.0uf or Higher Low Dropout Low Quiescent Current Over Temperature Shutdown Short Circuit Protection Low Temperature Coefficient Standard, and SOP-8 (Exposed Pad) Packages Pb-Free Package Application DSP, FPGA, and Microprocessor Power Supply.2V Core Voltage for DSPs SATA Power Supply LCD TV/ Monitors Wireless Devices Communication Devices Portable Electronics Post Regulator for SMPS TYPICAL APPLICATION CIRCUITS V C 4.7uF V GL600 VOUT V O CO 2.2uF C 4.7uF V EN RP 0K GL600 PWRGD VOUT SENSE OUT C2 2.2uF V. GM 43

2 MARKG FORMATION & P CONFIGURATIONS (TOP VIEW) SOP- 8 GL600 VVAYYWW V OUT SENSE PowerGD GL600 VVAYYWW V V OUT * V V EN V V A YY W W = Output Voltage (8=.8V, 25=2.5V) = Assembly Location = Year = Weekly ORDERG FORMATION (Green Package Products are available now!) ORDERG NUMBER OUTPUT VOLTAGE PACKAGE SHIPPG GL600 GL ST3R 0.9V GL S8R 0.9V SOP-8 GL600-.0ST3R.0V GL600-.0S8R.0V SOP-8 GL600-.2ST3R.2V GL600-.2S8R.2V SOP-8 GL600-.5ST3R.5V GL600-.5S8R.5V SOP-8 GL600-.8ST3R.8V GL600-.8S8R.8V SOP-8 GL ST3R 2.5V * For detail Ordering Number identification, please see last page. GL S8R 2.5V SOP-8 GL ST3R 2.8V GL S8R 2.8V SOP-8 GL ST3R 2.85V GL S8R 2.85V SOP-8 GL ST3R 3.0V GL S8R 3.0V SOP-8 GL ST3R 3.3V GL S8R 3.3V SOP-8 2

3 Absolute Maximum Ratings These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Input Voltage...4.0V Output Pin Voltage V to V +0.3V Operation Temperature Range to 85 Operation Junction Temperature to 25 Maximum Output Current...P D/(V-V O) Storage Temperature to 50 Maximum Junction Temperature...50 Soldering Temperature...300, 5sec Recommended Operating Conditions Supply Voltage Range...4V to 3.6V Operation Temperature Range to 85 Junction Temperature Range to 25 Thermal Information Parameter Symbol Package Maximum Unit Thermal Resistance θ JC 7 (JunctiontoCase) /W Thermal Resistance θ JA 60 (Junction to Ambient) Internal Power Dissipation P D 625 mw FUNCTIONAL DIAGRAM OUT OUT OverCurrent Shutdown OverCurrent Shutdown 2 Thermal Shutdown AMP R R2 EN Thermal Shutdown AMP R R2 3

4 Electrical Characteristic O V = V +V, T =25 C, C =4.7uF, C =2.2uF, unless otherwise noted. O A O Parameters Symbol Test Conditions M TYP MAX UNITS Input Voltage Range V Note 3.6 V Output Voltage Accuracy V O I O =00mA -2 2 % Vo=0.9V Dropout Voltage V DROP I O =000mA Vo=.0V V>Vo.2V mv Vo 2.5V Short Circuit Current I SC Vo < 0.3V 2.0 A Quiescent Current I Q Io=0mA ua Ground Pin Current I Io=mA to A 600 ua Line Regulation LNR V O 2.5V, V =Vo+V to Vo+.5V V O >2.5V,I O =0mA %/V V =3.3V to 3.6V Load Regulation LDR I O =ma to A 2 %/A Over Temperature Shutdown OTS 50 Over Temperature Hysteresis OTH 50 Temperature Coefficient TC 40 ppm/ f=00hz 55 Power Supply Ripple I O =00mA, PSRR f=khz 55 Rejection V O =.5V f=0khz 35 db Output Noise Vn f=0hz to 00kHz 40 uvrms Note: The minimum input voltage (V (M) ) of the GL600 is determined by output voltage and dropout voltage. The minimum input voltage is defined as: V =V +V (M) O drop 4 Typical Performance Characteristics T A2 =25 C,C =4.7uA,Co=2.2uF,unless otherwise noted. 2. Output Voltage vs Input Voltage Vo= 0. 9V Io=.5A 0.3 Vo=0.9V ,TA=85 0.6,TA=25 æ

5 .7 Gleam Io=.5A ,TA=85 æ,ta=25 æ Vo=2.5V 3 Vo=2.5V Io=.5A ,TA=25 æ,ta=85 æ Output Voltage vs Output Current Vo=0.9V Output Voltage vs Temperature Vo=0.9V, V =3.3V V=3.3V V=2.5 V=.5V Output Current(mA) V=3.3V V=2.5V V=2.0V Output Current(mA) Temperature( æ), V =3.3V Temperature( æ) 5

6 2.55 Vo=2.5V 2.55 Vo=2.5V, V =3.3V V=3.6V V=3.3V V=3.0V Output Current(mA) Voltage(V) Temperature( æ) Quiescent Current vs Input Voltage Quiescent Current vs Temperature Quiescent Current(uA) Io=0mA,TA=85 æ Io=0mA,TA=25 æ Quiescent Current(uA) V=2.5V V=3.3V Temperature( æ) Ground Current(uA) 6. Ground Current vs Output Current V=3.3V V=2.5V 60 V=2.0V Output Current(mA) Ground Current(uA) 7. Ground Current vs Input Voltage Io=.5A

7 Output Current 8. Dropout Voltage vs Output Current 9. Dropout Voltage vs Temperature Vo=2.5V Vo=0.9V Dropout Voltage(V) Dropout Voltage Vo=2.5V Vo=0.9V Temperature( æ). Load Transient Response Vo AC Vo AC Io DC Io DC, V =3.3V, to.5a, V =3.3V, to 500mA 2. Line Transient Response Vo AC Io DC, V =3.3V, to.5a V DC Vo AC, V =2V to 3.3V, Io=mA 7

8 Application Information The GL600 family of low-dropout (LDO) regulators have several features that allow them to apply to a wide range of applications. The family operates with very low input voltage (.4V) and low dropout voltage (typically 50mV at full load), making it an efficient stand-alone power supply or post regulator for battery or switch mode power supplies. The A output current make the GL600 family suitable for powering many microprocessors and FPGA supplies. The GL600 family also has low output noise (typically 40μVRMS with 2.2μF output capacitor), making it ideal for use in telecom equipment. External Capacitor Requirements A 2.2μF or larger ceramic input bypass capacitor, connected between V and and located close to the GL600, is required for stability. A.0uF minimum value capacitor from VO to is also required. To improve transient response, noise rejection, and ripple rejection, an additional 0μF or larger, low ESR capacitor is recommended at the output. A higher-value, low ESR output capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source, especially if the minimum input voltage of.4 V is used. Regulator Protection The GL600 features internal current limiting, thermal protection and short circuit protection. During normal operation, the GL600 limits output current to about 2A. When current limiting engages, the output voltage scales back linearly until the over current condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of the device exceeds 50 C, thermalprotection circuitry will shut down. Once the device has cooled down to approximately 50 C below the high temp trip point, regulator operation resumes. The short circuit current of the GL600 is about A when its output pin is shorted to ground. Thermal Information The amount of heat that an LDO linear regulator generates is: P =(V -V )I. D O O All integrated circuits have a maximum allowable junction temperature (TJ max) above which normal operation is not assured. A system designer must design the operating environment so that the operating junction temperature (T J) does not exceed the maximum junction temperature (TJ max). The two main environmental variables that a designer can use to improve thermal performance are air flow and external heatsinks. The purpose of this information is to aid the designer in determining the proper operating environment for a linear regulator that is operating at a specific power level. In general, the maximum expected power (P D(max)) consumed by a linear regulator is computed as: P DMAX= VI avg -V O avg I O avg +V I avg I Q () Where: VI (avg) is the average input voltage. VO(avg) is the average output voltage. IO(avg) is the average output current. I is the quiescent current. (Q) For most LDO regulators, the quiescent current is insignificant compared to the average output current; therefore, the term VI(avg) xi(q) can be neglected. The operating junction temperature is computed by adding the ambient temperature (T A) and the increase in temperature due to the regulator' s power dissipation. The temperature rise is computed by multiplying the maximum expected power dissipation by the sum of the thermal resistances between the junction and the case ( R θjc), the case to heatsink (R θcs), and the heatsink to ambient (R θ SA). Thermal resistances are measures of how effectively an object dissipates heat. Typically, the larger the device, the more surface area available for power dissipation so that the object 's thermal resistance will be lower. 8

9 X SOT- 223 PACKAGE OUTLE DIMENSIONS 650± ± ± ± ± 2.30 ± ± ± ~ ± ±005.. Unit: mm R SOP-8 PACKAGE OUTLE DIMENSIONS ~ P DENT NOM NOM NOM.270 NOM ( Inches ) mm 9

10 ORDERG NUMBER Unit: mm GL600.8 ST3 R Circuit Type Output Voltage Package ST3: S8: SOP-8 Shipping R: Tape & Reel 0