SEMP8965
SEMP8965 is Fast Ultra High-PSRR manufactured by SeCoS Halbleitertechnologie GmbH.
DESCRIPTION
The SEMP8965 low-dropout (LDO) CMOS linear regulators, consisting of SEMP8965, SEMP8966, and SEMP8968, feature ultra-high power supply rejection ratio (75d B at 1k Hz), low output voltage noise (30µV), low dropout voltage (270m V), low quiescent current (110µA), and fast transient response. It guarantees delivery of 600m A output current, and supports preset (1.2V~3.3V with 0.1V increment, except for 1.85V and 2.85V) as well as adjustable (1.2V to 5.0V) output voltage versions. The SEMP8965 is ideal for battery-powered applications by virtue of its low quiescent current consumption and its 1n A shutdown mode of logical operation. The regulator provides fast turn-on and start-up time by using dedicated circuitry to pre-charge an optional external bypass capacitor. This bypass capacitor is used to reduce the output voltage noise without adversely affecting the load transient response. The high power supply rejection ratio of the SEMP8965 holds well for low input voltages typically encountered in battery- operated systems. The regulator is stable with small ceramic capacitive loads (2.2µF typical). Additional features include regulation fault detection, band-gap voltage reference, constant current limiting and thermal overload protection.
FEATURES z z z z z z
600m A guaranteed output current 75d B typical PSRR at 1k Hz 30µV RMS output voltage noise (10Hz to 100k Hz) 270m V typical dropout at 600m A 110µA typical quiescent current 1n A typical shutdown mode z z z z z
Fast line and load transient response 80µs typical fast turn-on time 2.5V to 5.5V input range Stable with small ceramic output capacitors Over temperature and over current protection ±2% output voltage tolerance
PACKAGE DIMENSIONS SOT-25
SYMBOLS A A1 A2 b c D E E1 e e1 L L1 θ° θ2° MIN. 1.05 0 1.00 0.30 0.08 2.80 2.60 1.50 0.95 BSC 1.90 BSC 0.30 0.60 REF 0 6 NOM. 1.20 1.10 2.90 2.80 1.60 MAX. 1.35 0.15 1.20 0.55 0.20 3.00 3.00 1.70
0.45 5 8
0.55 10 10
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