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ILC6360CIR-36 Fiches technique(PDF) 1 Page - Impala Linear Corporation |
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ILC6360CIR-36 Fiches technique(HTML) 1 Page - Impala Linear Corporation |
1 / 14 page ILC6360 Step-Up/Step Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Impala Linear Corporation Impala Linear Corporation 1 (408) 574-3939 www.impalalinear.com Jan 1999 ILC6360 1.1 The ILC6360 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 ILC6360 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 ILC6360’s input voltage exceeds the output voltage by more than 800mV, the output will begin to track the input linearly. Configured as a 300kHz, fixed frequency PWM boost con- verter, the ILC6360 performs the buck operation by seam- lessly switching to PFM, when the output voltage rises near the positive range of regulation. However, since the transition point between PWM and PFM mode is dependent upon both line, and load regulation, under certain conditions, regulation will remain in PWM mode even in the buck mode of operation. The ILC6360 is unconditionally stable with no external com- pensation; the sizes of the input and output capacitors influ- ence the ripple on the input, and output voltages. Since the ILC6360 has an internal synchronous rectifier, the standard fixed voltage version requires minimal external components: an inductor, an input capacitor, and an output capacitor. An additional 10µF ceramic output capacitor will help reduce output ripple voltage. Other features include an external sync input for synchro- nizing the PWM frequency, low battery input detector with 100ms transient rejection delay built-in, and, a power good indicator useful as a system power on reset. • ILC6360CIR-36: Fixed 3.6V output; custom voltages possible • ILC6360CIR-ADJ: Adjustable output to 6V maximum • Capable of 500mA output current • Peak efficiency: > 90% at VOUT = .6V,IOUT = 300mA, VIN = 3.6V • No external diode is required (synchronous rectification) • Battery input current of 250mA at no load • True load disconnect from battery input in shutdown (1mA) • OSC freq: 300kHz ±15% • External freq synchronization from 150kHz to 500kHz • Low battery detector with 100ms transient rejection delay • Power good output flag when VOUT is in regulation • MSOP-8 package • Cellular phones • Palmtops, PDAs and portable electronics • Equipment using single Lithium-Ion batteries Optimized to Maximize Battery Life 90 80 70 Time 4.2 3.6 3.0 15 µH Ext Sync (Connect to GND if unused) L C OUT ILC6360CIR-ADJ L X V IN LBI/SD SYNC GND LBO V FB V OUT V OUT 1 2 3 4 8 7 6 5 + V IN + 100 µF C IN + 10µF 100µF 3.6V/500mA Low Battery Detector Output Power Good Output 2.7V to 4.2V R5 R6 MSOP-8 ON OFF ILC6360 Efficiency @ IOUT = 300mA Typical Li-ion Battery Discharge Curve Typical Step-up/Step-down Application Circuit (Note: R5 and R6 are required only if LBI feature is used) Typical Performance Characteristics for 1-cell Li-ion General Description Features Applications Patent Pending |
Numéro de pièce similaire - ILC6360CIR-36 |
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Description similaire - ILC6360CIR-36 |
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