LTC1682-3.3 LINER [Linear Technology], LTC1682-3.3 Datasheet
LTC1682-3.3
Related parts for LTC1682-3.3
LTC1682-3.3 Summary of contents
Page 1
... The LTC1682 LDO regulator is stable with only the output. Small ceramic capacitors can be used, reducing PC board area. The LTC1682/LTC1682-3.3/LTC1682-5 are short-circuit and over temperature protected. The parts are available in 8-pin MSOP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... SHDN 2 LTC1682CMS8-5 3 FILT/FB* LTC1682IMS8 GND 4 LTC1682IMS8-3.3 LTC1682IMS8-5 8-LEAD PLASTIC SO MS8 PART MARKING *PIN3 = FILT FOR LTC1682-3.3/LTC1682 FOR LTC1682 LTER LTHM T JMAX LTGT LTGU LTGV LTGW The denotes specifications that apply over the full operating temperature = 3V 0.22 F; C2, C3 4.7 F, unless otherwise noted. ...
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... C. SHDN = V A PARAMETER CONDITIONS CPO (Charge Pump Output 1.8V Output Resistance 4.4V Dropout Voltage (Note 3) LTC1682, I OUT LTC1682/LTC1682-3.3, I LTC1682/LTC1682- Enable Time I = 10mA OUT OUT V Output Noise Voltage LTC1682 OUT LTC1682-3.3 LTC1682-5 V Line Regulation 4V, I OUT ...
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... TIME ( s) 1682 G02 Enable to Shutdown Timing LOAD OUT OUT 1ms/DIV 1682 G05 LTC1682-3.3 LTC1682-5 LTC1682 2.0 2.5 3.0 3.5 4.0 4.5 V (V) IN 1682 G08 250 300 1682 G02 1682 G06 ...
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... G09 FILT (Pin 3) (LTC1682-3.3/LTC1682-5): This pin is used OUT to filter the internal voltage reference. Typically a 1nF capacitor is connected from FILT to ground. OUT GND (Pin 4): System Ground. – C (Pin 5): Flying Capacitor Negative Input. V (Pin 6): Input Voltage, 1 ...
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... LTC1682/LTC1682-3.3/LTC1682-5 W BLOCK DIAGRA 4.7 F POWER- SHDN 2 ON RESET SD REGEN ENB V REF – CHARGE PUMP AND SLEW CONTROL ENB CLK1 550kHz REG B OSCILLATOR – LDO REGEN = 1.235V 1 A Figure 1. LTC1682 Block Diagram CPO 8 C3 275k 4 ...
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... CHARGE PUMP AND SLEW CONTROL ENB CLK1 550kHz REG B OSCILLATOR SD – LDO REGEN = 1.235V RA RB 120k/65.5k 200k 1 A/2 A Figure 2. LTC1682-3.3/LTC1682-5 Block Diagram CPO 8 C3 275k 4.7 F – + 38k + – 328k 1:100 1 V OUT C2 4 100 1682 F02 4 GND 7 ...
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... IN capacitor on V response. A low ESR capacitor should be used. Output Voltage Selection The LTC1682-3.3/LTC1682-5 versions have internal resistor networks to set the regulated output voltage. The LTC1682 output voltage is set using an external resistor divider (see Figure 3). The output voltage is determined using the following formula ...
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... CPO voltage falls below 1.45(V will be disabled and the CPO voltage will have to charge up to 1.75(V , 0.2V < 1.65V. IN extends the enable time. A 1nF filter capacitor for the LTC1682-3.3/LTC1682-5 . OUT should be connected between the FILT pin and ground for optimum noise performance. Output Ripple The output noise and ripple on CPO includes a spike ...
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... A clean board layout using a ground plane and short connections to all capacitors will improve noise perfor- mance and ensure proper regulation (Figure 5). The FILT pin on the LTC1682-3.3/LTC1682 high impedance node. Leakage currents at this pin must be minimized. (2V – ...
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... 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 LTC1682/LTC1682-3.3/LTC1682-5 3.3V to Low Noise 3.3V Converter SHUTDOWN 8 1 CPO V OUT SHDN LTC1682-3 FILT FILT 1nF 0. – C GND 1682 TA03 U Dimensions in inches (millimeters) unless otherwise noted ...
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... LTC1682/LTC1682-3.3/LTC1682-5 U TYPICAL APPLICATION FMMT3904 D1 1N4148 3V (REQUIRED FOR C4 START-UP) 4.7 F RELATED PARTS PART NUMBER DESCRIPTION LTC1340 Low Noise, Voltage-Boosted Varactor Driver LTC1517-X Micropower, Regulated Charge Pump Doubler in SOT-23 LT1521 300mA Low Dropout Regulator LTC1522 Micropower, Regulated 5V Charge Pump LT1761 Series ...