The LP5952 is a Dual Supply Rail Linear Regulator optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries.
In the typical post regulation application VBATT is directly connected to the battery (range 2.5V...5.5V) and VIN is supplied by the output voltage of the DC-DC Converter (range 0.7V...4.5V).
The device offers superior dropout and transient features combined with very low quiescent currents. In shutdown mode (Enable pin pulled low) the device turns off and reduces battery consumption to 0.1µA (typ.).
The LP5952 also features internal protection against over-temperature, over-current and under-voltage conditions.
Performance is specified for a -40°C to 125°C junction temperature range.
The device is available in a tiny 5-bump DSBGA and a 6-pin Chip On Lead USON package, lead free.
Excellent load transient response: ±15mV typical
Excellent line transient response: ±1mV typical
0.7V ≤ VIN ≤ 4.5V
2.5V ≤ VBATT ≤ 5.5V
0.5V ≤ VOUT ≤ 2.0V
For ILOAD = 350mA:
VBATT ≥ VOUT(NOM) + 1.5V or 2.5V whichever is higher
For ILOAD = 150mA:
VBATT ≥ VOUT(NOM) + 1.3V or 2.5V whichever is higher
50µA typical quiescent current from VBATT
10µA typical quiescent current from VIN
0.1µA typical quiescent current in shutdown
Ensured 350mA output current
Noise voltage = 100µVRMS typical
Operates from a single Li-Ion cell or 3 cell
Only one or two tiny surface-mount external components required depending on application
Small, thin 5-bump DSBGA package and 6-pin Chip On Lead USON package, lead free