ILC6363 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • ILC6363CIR-50: Fixed 5.0V output; custom voltages are available upon request
  • ILC6363CIR-ADJ: Adjustable output to 6V maximum
  • Capable of 500mA output current
  • Peak efficiency: > 90% at V OUT = 3.6V , I OUT = 300mA, V IN = 3.6V
  • No external diode is required (synchronous rectification)
  • Battery input current of 300µA at no load
  • True load disconnect from battery input in shutdown (1µA)
  • Oscillator frequency: 300kHz ±15%
  • Low battery detector with 100ms transient rejection delay
  • Power good output flag when V OUT is in regulation
  • MSOP-8 package

Applications

  • Cellular phones
  • Palmtops, PDAs and portable electronics
  • Equipment using single Lithium-Ion batteries

Description

The ILC6363 step-up/step-down DC-DC converter is a switch mode converter, capable of supplying up to 500mA output current, at a fixed or user selectable output voltage. The range of input, and output voltage options makes the ILC6363 ideal for Lithium-ion (Li-ion), or any other battery application, where the input voltage range spans above and below the regulated output voltage. When ILC6363’s input voltage exceeds the output voltage by more than 800mV , the output will begin to track the input linearly. The ILC6363 is a direct replacement for ILC6360, in appli- cations where SYNC pin is not used. The PFM or PWM operating mode is user selectable through SEL pin connected to ground or left open, respectively. The choice should be dependent upon the current to be delivered to the load: PFM is recommended for better efficiency at light load,while PWM is recommended for more than 50mA load current. In shutdown mode, the device allows true load disconnect from battery input. Configured as a 300kHz, fixed frequency PWM/PFM boost converter, the ILC6363 can perform a limited buck operation in PFM mode, when the input voltage is up to 0.8V higher than the output voltage. The ILC6363 is unconditionally stable with no external compensation; the sizes of the input and output capacitors influence input and output ripple voltages, respectively. Since the ILC6363 has an internal synchronous rectifier, the standard fixed voltage version requires minimal external components: an inductor, an input capacitor, and an output capacitor. If a tantalum output capacitor is used, then an additional 10µF ceramic output capacitor will help reduce output ripple voltage. Other features include a low battery input detector with a built-in100ms transient rejection delay and a power good indicator useful as a system power on reset. ILC6363 Step-Up DC-DC Converter for One-Cell Lithium-Ion Batteries Typical Circuit Optimized to Maximize Battery Life Time 4.2 3.6 3.0 Battery Voltage (V) ILC6363 Efficiency (%) Figure 1. 15µH L C OUT ILC6363CIR-XX LX VIN LBI/SD SEL GND LBO POK VOUT VOUT1 VIN +100µF C IN 10µF 100µF Low Battery Detector Output Power Good Output (Fixed VOUT only) 2.7V to 4.2V R5 MSOP-8 ON OFF PFM PWM

ILC6363 PRODUCT SPECIFICATION REV. 1.3.5 5/21/02 Pin Assignments Pin Definitions Absolute Maximum Ratings Pin Number Pin Name Pin Function Description X Inductor input . Inductor L connected between this pin and the battery IN Input Voltage . Connect directly to battery

3 LBI/SD

Low battery detect input and shutdown . Low battery detect threshold is set with this pin using a potential divider. If this pin is pulled to logic low then the device will shutdown.

4 SEL

A low logic level signal applied to this pin selects PFM operation mode. If the pin is left open or high logic level is applied, PWM mode is selected. POK (ILC6363CIR-XX Power Good Output . This open drain output pin will go high when output voltage is within regulation, 0.92•V OUT(NOM) < V threshold 0.98•V OUT(NOM) V FB (ILC6363CIR-ADJ) Feedback Input . This pin sets the adjustable output voltage via an external resistor divider network. The formula for choosing the resistors is shown in the “Applications Information” section.

6 LBO

. This open drain output will go low if the battery voltage is below the low battery threshold set at pin 3.

7 GND

. Connect this pin to the battery and system ground OUT Regulated output voltage Parameter Symbol Ratings Units Voltage on V OUT pin V OUT -0.3 to 7 V Voltage on LBI, Sync, LBO, POK, V FB , L X and V IN pins -0.3 to 7 V Peak switch current on L X pin IL X Current on LBO pin I SINK(LBO) 5m A Continuous total power dissipation at 85°C P D 315 mW Short circuit current I SC Internally protected (1 sec. duration) A Operating ambient temperature T A -40 to 85 °C Maximum junction temperature T J(MAX) 150 °C Storage temperature T stg -40 to 125 °C Lead temperature (soldering 10 sec.) 300 °C Package thermal resistance θ JA 206 °C/W MSOP (TOP VIEW) ILC6363CIR-XX SEL LB/SD VIN LX 1 4 5

8 VOUT

(TOP VIEW) ILC6363CIR-ADJ VIN LX VOUT

PRODUCT SPECIFICATION ILC6363 REV. 1.3.5 5/21/02 (SEL in LOW State) Unless otherwise specified, all limits are at V IN = V LBI = 3.6V, I OUT = 1mA and T A = 25°C, test circuit Figure 1. BOLDFACE type indicate limits over the specified operating temperature range. (Note 2) (SEL Open) Unless otherwise specified, all limits are at V IN = V LBI = 3.6V, I OUT = 100mA and T A = 25°C, test circuit Figure 1. BOLDFACE type indicate limits over the full operating temperature range. (Note 2) Parameter Symbol Conditions Min. Typ. Max. Units Output Voltage V OUT(nom) 2.7V < V IN < 4.2V 4.875 4.825 5.0 5.125 5.175 V Maximum Output Current I OUT V OUT 0.96V OUT(nom) V IN = 2.7V 250 mA Load Regulation ∆∆∆∆ V OUT V OUT 1mA < I OUT < 50mA 1 % No Load Battery Input Current I IN (no load) I OUT = 0mA 300 µA Efficiency η I OUT = 20mA 85 % Parameter Symbol Conditions Min. Typ. Max. Units Output Voltage V OUT(nom) 2.7V < V IN < 4.2V 4.850 4.800 5.0 5.150 5.200 V Maximum Output Current I OUT V OUT 0.92V OUT(nom) 500 mA Load Regulation ∆∆∆∆ V OUT V OUT 50mA < I OUT < 200mA 50mA < I OUT < 300mA Efficiency η I OUT = 300mA 92 %

ILC6363 PRODUCT SPECIFICATION REV. 1.3.5 5/21/02 General Electrical Characteristics T A = 25°C, V IN = V LBI = 3.6V, I OUT = 50mA, unless otherwise specified. BOLDFACE indicate limits over the specified operating temperature range. (Note 2). Notes: 1. Absolute maximum ratings indicate limits which, when exceeded, may result in damage to the component. Electrical specifications do not apply when operating the device outside its rated operating conditions. 2. Specified min/max limits are production tested or guaranteed through correlation based on statistical control methods. Measurements are taken at constant junction temperature as close to ambient temperature as possible using low duty cycle pulse testing. 3. Guaranteed by design 4. In order to get a valid low-battery-output (LBO) signal, the input voltage must be lower than the low-battery-input (LBI) threshold for a duration greater than the low battery hold time (Hold(LBI)). This feature eliminates false triggering due to voltage transients at the battery terminal. Parameter Symbol Conditions Min. Typ. Max. Units LBO output voltage low V LBO(low) I SINK = 2mA, open drain output, V LBI = 1V 0.4 V LBO output leakage current I LBO(hi) V LBO = 5V 1 µA Shutdown input voltage low V SD(low) 0.4 V Shutdown input voltage high V SD(hi) V SEL input voltage high V SEL(hi) 1.5 V SEL input voltage low V SEL(low) 0.4 V POK output voltage low V POK(low) ISINK = 2mA, open drain output 0.4 V POK output voltage high V POK(hi) 6 V POK output leakage Current IL(POK) 6V at pin 5 2 µA POK threshold V TH(POK 0.92xVOUT 0.95xVOUT 0.98xVOUT V POK hysteresis V HYST 50 mV Feedback voltage (ILC6363CIR-ADJ only) VFB 1.225 1.212 1.250 1.275 1.288 V Output voltage adjustment range (ILC6363CIR-ADJ only) VOUT(ADJ) min VOUT(ADJ) max VIN = 0.9V, IOUT = 50mA VIN = 3V, IOUT = 50mA 2.5 V Minimum startup voltage V IN(start) I OUT = 10mA, PWM mode 0.9 1 V Input voltage range V IN VOUT = VOUT(nominal) ± 4% I OUT = 10mA 0.9 VOUT(nomi- nal) + 0.8V V Battery input current in load disconnect mode IIN(SD) VLBI/SD < 0.4V, VOUT = 0V (short circuit) 1 10 µA Switch on resistance R ds(on) N-Channel MOSFET P-Channel MOSFET 400 750 m Ω Oscillator frequency f osc 255 300 345 kHz LBI input threshold V REF 1.175 1.150 1.250 1.325 1.350 V Input leakage current I LEAK Pins LB/SD,SEL and VFB, (Note 3) 200 nA LBI hold time t HOLD(LBI) (Note 4) 100 120 mS

Figure 5. PFM Waveform across R6. A typical value for R6 is 100kΩ . high frequency switching currents. Figure 6. Low Battery Detector circuitry for this is shown in Figure 7. Figure 7. VLBI < 1.25V formula across R2. A typical value for R2 is 100kΩ .

2 VIN

Figure 8. Shut Down Control within the regulation tolerance of the set output voltage. some other system voltage source. Where VFB is the threshold set which is 1.25V nominal. Figure 9. Adjustable Voltage Configuration voltage at low current is required. Figure 10. Negative Output Voltage vendors are shown in the following table.

EMI and output voltage ripple.

  1. Place all power components, ILC6363, inductor, input
  2. Keep the output capacitor as close to the ILC6363 as

pins. Typically it should be within 0.25 inches or 6mm.

  1. Keep the traces for the power components wide,
  2. Place the external networks for LBI and VFB close to
  3. Use a star grounding system with separate traces for

the power supply enters the PCB.

  1. On multilayer boards use component side copper for

quiet ground plane using vias. Figure 11. Recommended Application Circuit

ILC6363 PRODUCT SPECIFICATION 9 REV. 1.3.5 5/21/02 Evaluation Board Parts List for Printed Circuit Board Shown on the Previous Page Label Part Number Manufacturer Description U1 ILC6363CIR-ADJ Fairchild Semiconductor DC-DC converter C GRM44-1 X5R 107K 6.3 muRata 100µF, ceramic capacitor L1 LQS66C150M04 muRata 15µH, 1.3A R1 and R2 — Dale, Panasonic User determined values R3 — Dale, Panasonic 10k Ω , 1/10W, SMT Label Part Number Manufacturer Description U1 ILC6363CIR-XX Fairchild Semiconductor DC-DC converter C GRM44-1 X5R 107K 6.3 muRata 100µF, ceramic capacitor L1 LQS66CA150M04 muRata 15µH, 1.3A R1 and R3 - Dale, Panasonic 10k Ω , 1/10W, SMT

ILC6363 PRODUCT SPECIFICATION 10 REV. 1.3.5 5/21/02 Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified: TA = 25°C, CIN = 100µF , COUT = 100µF , L = 15µH, VOUT = 3.6V 100 01 0 2 0 IOUT (mA) Efficiency vs Output Current (PFM Mode) Efficiency (%) 30 40 50 100 0 100 200 I OUT (mA) Efficiency vs Output Current (PWM Mode) Efficiency (%)VOUT (V) 300 400 500 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 VOUT (V) 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.8 3.0 3.2 V IN (V) Efficiency vs Input Voltage (PFM Mode) Efficiency (%) 2.8 3.0 3.2 VIN (V) IOUT (mA) 2.8 3.0 3.2 VIN (V) Efficiency vs Input Voltage (PWM Mode) Line Regulation Load Regulation Efficiency (%) VIN=3.4V VIN=3.4V VIN=3.4V IOUT =50mA IOUT =50mA IOUT =50mA IOUT =40mA IOUT =10mA IOUT =5mA IOUT =20mA IOUT =100mA IOUT =200mA IOUT =200mA IOUT =400mA IOUT =400mA IOUT =300mA VOUT =(nom)=3.6VIOUT =3mA IOUT =500mA IOUT =500mA VIN=2.8V VIN=2.8V VIN=2.8V VIN=3.2V VIN=3.2V VIN=3.2V VIN=3V VIN=3.0V VIN=3.0V VIN=3.6V VIN=3.6V VIN=3.6V VIN=3.8V VIN=3.8V VIN=3.8V VIN=4V VIN=4.0V VIN=4.0V VIN=4.2V VIN=4.2V VIN=4.2V

PRODUCT SPECIFICATION ILC6363 REV. 1.3.5 5/21/02 11 Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified: TA = 25°C, CIN = 100µF , COUT = 100µF , L = 15µH, VOUT = 3.6V 100 120 140 160 2.8 3.0 3.2 VIN (V) Output Ripple Voltage vs Input Voltage Output Ripple (mVpp) 2.8 VIN (V) VIN vs VOUT VOUT (V) 3.6 3.8 4.2 4.6 100 120 140 160 2.8 3.0 3.2 VIN (V) Ripple Current vs Input Voltage Line Transient Response VOUT (mV) V IN(mV) 500µs/div 250µs/div1µs/div -50 +50 2.8 3.8 PWM Mode Load Switching Waveform Inductor Current VOUT AC Coupled PFM Mode Load Switching Waveform Inductor Current VOUT AC Coupled Ripple Current (mApp) IOUT =50mA IOUT =10mA IOUT =100mA IOUT =100mA IOUT =100mA IOUT =400mA IOUT =200mA IOUT =500mAIOUT =500mA IOUT =500mA IOUT =250mA IOUT =400mA IOUT =200mA IOUT =0mA, 10mA IOUT =0mA, 10mA 50mA IOUT =0mA IOUT =50mA

ILC6363 PRODUCT SPECIFICATION 12 REV. 1.3.5 5/21/02 Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified: TA = 25°C, CIN = 100µF , COUT = 100µF , L = 15µH, VOUT = 3.6V (nominal) 3.6 3.7 -40-30 -20 Temperature °C 20ms/div→ 20ms/div→ VOUT vs Temperature Spectral Noise Plot Spectral Noise Plot Low Battery Output (VIN < VTH for Greater than 100ms) 10kΩ pull-up resistor from LBO to 3V supply Low Battery Output (VIN < VTH for Less than 100ms) 10kΩ pull-up resistor from LBO to 3V supply VOUT (V) VIN (V) LBO (V) - 1 00 1 02 03 04 05 0 6 07 08 09 0 3.5 3.4 3.3 1.80 2.40 3.00 100 1k 10k 100k 1M Freq (Hz) Freq (Hz) Output Noise Voltage (mVrms) 1.20 0.60 -82 -62 -42 255k 335k 415k 495k 575k 655k Output Noise Voltage (dBVrms) -102 -122 -142 1.5 1.0 0.5 VIN (V) LBO (V) 1.5 1.0 0.5 VOUT =3.6V (nominal) VIN=4.2V, ILOAD =200mA VIN=4.2V, ILOAD =500mA VIN=3.6V, ILOAD =200mA VIN=4.2V, ILOAD =500mA VIN=3.0V, ILOAD =500mA VIN=1.2V IOUT =40mA VIN=1.2V IOUT =40mA VIN=2.8V IOUT =68mA VIN=2.8V IOUT =66mA Fundamental: 345kHz/2.7mVrms 345kHz IF Band:2.6µVrms First Harmonic 690kHz/0.66mVrms VIN=2.8V, ILOAD =500mA VIN=2.8V, ILOAD =200mA

PRODUCT SPECIFICATION ILC6363 REV. 1.3.5 5/21/02 13 Mechanical Dimensions

8 Lead MSOP

0.122 (3.1) 0.114 (2.9) (0-10)° 0.122 (3.1) 0.114 (2.9) 0.244 (5.15) 0.228 (4.65) 0.025 (.65)BSC 0.043 (1.1) 0.031 (.80) 0.006 (.15) 0.01 (.25) 0.009 (.23) 0.005 (.13) 0.027 (.70) 0.016 (.40)

ILC6363 PRODUCT SPECIFICATION 5/21/02 0.0m 003 Stock#DS30006363  2002 Fairchild Semiconductor Corporation LIFE SUPPORT POLICY FAIRCHILD ’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. Ordering Information for Ta = -40°C to +85°C, MSOP-8 Package Part Number Output Voltage ILC6363CIR50X 5.0 ILC6363CIRADJX Adjustable