NCP161

LDO Regulator, Ultra-Low Noise and High PSRR, 450 mA; ? Ultra High PSRR 98dB at 1kHz, 48dB at 100kHz\n? Excellent for power sensitive device like Wi-Fi module\n? Ultra Low Output Noise 10 μVRMS\n? Very well suited for noise sensitive application\n? Ultra Low Quiescent current 18 μA\n? Improved efficiency during light load conditions\n? Operating Input Voltage Range 1.9V to 5.5V\n? Suitable for battery powered device\n? Very Low Dropout 150mV at 450mA\n? Low power dissipation at full load\n? Available in CSP4 0.35P and XDFN4 0.65P package\n? Great for space constrains application\n? Available in industry standard TSOP5 package\n? Suitable for industrial applications\n;

The NCP161 is a linear regulator capable of supplying 450 mA output current. Designed to meet the requirements of RF and analog circuits, the NCP161 device provides low noise, high PSRR, low quiescent current, and very good load/line transients. The device is designed to work with a 1 μF input and a 1 μF output ceramic capacitor. It is available in two thickness ultra?small 0.35P, 0.65 mm x 0.65 mm Chip Scale Package (CSP) and XDFN?4 0.65P, 1 mm x 1 mm. \nSimilar Products:

NCP161

450 mA, Ultra-Low Noise and High PSRR LDO Regulator for RF and Analog Circuits

NCP1612

功率因數(shù)控制器，增強(qiáng)型，高能效; ? Critical conduction mode with current controlled frequency foldback\n? Optimizes conversion efficiency across load range\n? Dynamic Response Enhancer\n? Improved transient response for line and load steps\n? Soft Overvoltage Protection\n? Reduces accoustic noise and stress in the event of an overvoltage fault\n? -500 mA/+800 mA Drive Capability\n? Supports wide range of MOSFETs and power levels\n? Valley turn on\n? Improved efficiency amd reduced EMI generation\n? Wide Vcc Range of 9.5-35 Vdc\n? Easy to bias even under light load or high line conditions\n? Two Vcc startup versions: 10.5 V (A) and 17 V (B)\n? B version allows smaller Vcc capacitor and faster startup in self biased applications\n? AC Line Brownout Detection\n? Protects boost stage power components during line fault conditions\n? Cycle-by-cycle switch current monitoring\n? Enhances system robustness\n? Saturated inductor and shorted boost or bypass diode detection\n? Enhanced safety monitoring without extra components\n? PFC Okay Output\n? Can enable downstream controller of stable PFC rail\n? Latch Off Input\n? Simplifies implemented latch protection for power supply\n? Independent bulk overvoltage and undervoltage monitoring\n? Increased system reliablity\n? Open Ground Pin Fault Monitoring\n? Simplifies safety testing\n? Near Unity Power Factor\n? Thermal Shutdown\n;

The NCP1612 is active power factor corrected (PFC) controller specifically designed for use as a boost pre-converter in ac-dc adapters, flat TVs, lighting ballasts and other medium powered offline applications. The controller is based on an innovative Current Controlled Frequency Foldback(CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1612 linearly reduces the frequency down to about 20 kHz when the current is at a null. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. The controller features a robust suite of protection features to properly handle an array of power supply operating and fault conditions.This device is particularly suited a PFC stage for LLC controllers due to its dedicated PFC_Okay Output.

NCP1612A

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A1

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A1DR2G

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A2

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A2DR2G

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A3

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre

NCP1612A3DR2G

Enhanced, High??fficiency Power Factor Controller

TheNCP1612isdesignedtodrivePFCbooststagesbasedonaninnovativeCurrentControlledFrequencyFold-back(CCFF)method.Inthismode,thecircuitclassicallyoperatesinCriticalconductionMode(CrM)whentheinductorcurrentexceedsaprogrammablevalue.Whenthecurrentisbelowthispre