ltc3527eud-trpbf Linear Technology Corporation, ltc3527eud-trpbf Datasheet
ltc3527eud-trpbf
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ltc3527eud-trpbf Summary of contents
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FEATURES Dual Synchronous Step-Up DC/DC Converters ■ ■ Delivers 3.3V at 200mA/100mA from one Alkaline/ NiMH Cell, or 3.3V at 400mA/200mA from Two Cells V Start-Up Voltage: 700mV ■ IN ■ 0. Range after Start-Up IN 1.6V ...
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... LTC3527EUD-1#PBF LTC3527EUD-1#TRPBF LEAD BASED FINISH TAPE AND REEL LTC3527EUD LTC3527EUD#TR LTC3527EUD-1 LTC3527EUD-1#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ELECTRICAL CHARACTERISTICS temperature range, – ...
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ELECTRICAL CHARACTERISTICS temperature range, – 1.2V, V ° ° IN PARAMETER NMOS Switch On-Resistance, SW1 NMOS Switch On-Resistance, SW2 PMOS Switch On-Resistance, SW1 PMOS Switch On-Resistance, SW2 NMOS Current Limit, SW1 NMOS Current Limit, ...
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LTC3527/LTC3527-1 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Load Current and V IN for V = 1.8V at 1.2MHz OUT1 100 1.2V 1.5V 90 BURST 1. 1.5V 70 FIXED 0.01 0 ...
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TYPICAL PERFORMANCE CHARACTERISTICS No-Load Input Current 180 160 140 OUT 120 100 3. OUT OUT OUT 2.4V 1.8V 0 0.5 1 1.5 2 2.5 ...
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LTC3527/LTC3527-1 TYPICAL PERFORMANCE CHARACTERISTICS Current Limit vs Temperature 1.30 CONVERTER1 1.20 1. 1. 3.3V OUT 0.90 0.80 0.70 CONVERTER2 0.60 0.50 –45 –30 – TEMPERATURE (°C) 35271 G17 ...
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TYPICAL PERFORMANCE CHARACTERISTICS V and I During Start-Up OUT IN V OUT1 1V/DIV INPUT CURRENT 200mA/DIV SHDN1 PIN 1V/DIV 100µs/DIV V = 3.3V OUT1 C = 10µF OUT1 V Load Step Response OUT1 Burst Mode Operation at 1.2MHz V OUT1 ...
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LTC3527/LTC3527-1 PIN FUNCTIONS ⎯ S ⎯ H ⎯ D ⎯ N ⎯ 1 (Pin 1): Boost Converter 1 Logic-Controlled Shutdown Input. There is an internal 4MΩ pull-down on this pin. • ⎯ S ⎯ H ⎯ D ⎯ N ⎯ ...
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BLOCK DIAGRAM SW1 6 L1 4.7µ IN1 0.88V 4.7µF SHDN1 1 SHUTDOWN AND V PGOOD1 FSEL 10 3 MODE V REF_GD SW2 7 L2 4.7µH V IN2 9 ...
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LTC3527/LTC3527-1 OPERATION (Refer to Block Diagram) The LTC3527/LTC3527-1 are dual 1.2MHz/2.2MHz syn- chronous boost converters housed in a 16-lead 3mm × 3mm QFN package. With the ability to start up and operate from inputs less than 880mV, these devices feature ...
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OPERATION limit the minimum and maximum error amp output volt- ages for improved large-signal transient response. Power converter control loop compensation is provided internally. An external resistive voltage divider from V to ground programs the respective output voltage via FB1 ...
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LTC3527/LTC3527-1 OPERATION the output voltage droops slightly, switching resumes. This maximizes effi ciency at very light loads by minimiz- ing switching and quiescent current losses. Burst Mode output voltage ripple, which is typically 1% peak-to-peak, can be reduced by using ...
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APPLICATIONS INFORMATION Mode threshold) by reducing the inductor ripple cur- rent. Increasing the inductance above 10µH will increase size while providing little improvement in output current capability. The minimum inductance value is given by: V • – V ...
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LTC3527/LTC3527-1 APPLICATIONS INFORMATION Table 1. Recommended Inductors VENDOR PART/STYLE Coilcraft MSS5131 www.coilcraft.com MSS4020 ME3220 Coiltronics SD10 www.cooperet.com SD12 FDK MIP3226D www.fdk.com MIPF2520D Murata LQH43C www.murata.com LQH32C Sumida CDRH3D16 www.sumida.com CDRH2D14 TDK VLF3010A www.global.tdk.co.jp VLF5012A Taiyo Yuden NR3010 www.t-yuden.com NR3015 The ...
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TYPICAL APPLICATIONS 0.85V TO 1.60V + SINGLE ALKALINE CELL V OUT 3V 150mA OFF OFF L: SUMIDA CDRH3D164R7 OUT Boost 1 Effi ciency 100 1.2V 1.5V 90 BURST FIXED 40 30 ...
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LTC3527/LTC3527-1 TYPICAL APPLICATIONS 0.85V TO 1.60V + SINGLE ALKALINE CELL V OUT 1.8V 200mA OFF OFF OUT Boost 1 Effi ciency 100 1.2V 1.5V 90 BURST FIXED 0.01 ...
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TYPICAL APPLICATIONS 0.85V TO 1.60V + SINGLE ALKALINE CELL V OUT 3.3V 150mA ON OFF ON OFF L: SUMIDA CDRH3D162R2 TAIYO YUDEN X5R JMK212BJ475MD IN OUT Boost 1 Effi ciency 100 1.2V 1.5V 90 BURST 80 ...
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LTC3527/LTC3527-1 TYPICAL APPLICATIONS 1.8V TO 3.2V + ALKALINE + CELLS V OUT 5V 300mA OFF OFF L: SUMIDA CDRH3D164R7 OUT Boost 1 Effi ciency 100 2. BURST 80 1.8V 1. ...
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... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UD Package 16-Lead Plastic QFN (3mm × ...
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... Output Disconnect, Automatic Burst Mode Operation (LTC3526), PWM Only (LTC3526B) LTC3528/ 1A, 1MHz Synchronous Step-Up DC/DC Converter with Output LTC3528B Disconnect, Automatic Burst Mode Operation, PWM Only (LTC3528B) ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...