The S-13A1 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output voltage, and low current consumption developed based on CMOS technology.
A 2.2 μF small ceramic capacitor can be used, and the very small dropout voltage and the large output current due to the built-in transistor with low on-resistance are provided. The S-13A1 Series includes a load current protection circuit that prevents the output current from exceeding the current capacity of the output transistor and a thermal shutdown circuit that prevents damage due to overheating. In addition to the types in which output voltage is set inside the IC, a type for which output voltage can be set via an external resistor is added to a lineup. Also, the S-13A1 Series includes an inrush current limit circuit to limit the excess inrush current generated at power-on or at the time when the ON / OFF pin is set to ON. High heat radiation HSOP-8A and HSOP-6 or small SOT-89-5 packages realize high-density mounting.
Features
- Output voltage (internally set)
- 1.0 V to 3.5 V, selectable in 0.05 V step
- Output voltage (externally set)
- 1.05 V to 5.0 V, settable via external resistor (HSOP-8A, HSOP-6 and SOT-89-5 only)
- Input voltage
- 1.5 V to 5.5 V
- Output voltage accuracy
- ±1.0% (internally set, 1.0 V to 1.45 V output product: ±15mV)
- Dropout voltage
- 70 mV typ. (3.0 V output product, IOUT = 300 mA)
- Current consumption
During operation - 60 μA typ., 90 μA max.
During power-off - 0.1 μA typ., 1.0 μA max.
- Output current
- Possible to output 1000 mA (VIN ≥ VOUT(S) + 1.0 V)*1
- Input and output capacitors
- A ceramic capacitor of 2.2 μF or more can be used.
- Ripple rejection
- 70dB typ. (f=1.0kHz)
- Built-in overcurrent protection circuit
- Limits overcurrent of output transistor.
- Built-in thermal shutdown circuit
- Prevents damage caused by heat.
- Built-in inrush current limit circuit
- Limits excessive inrush current generated at power-on or at the time when the ON / OFF pin is set to ON.
For types in which output voltage is internally set of HSOP-8A, HSOP-6 and SOT-89-5 inrush current limit time can be changed via an external capacitor (CSS).
Inrush current limit time 0.7 ms typ.
(types in which output voltage is internally set of HSOP-8A, HSOP-6 SOT-89-5, CSS = 1.0 nF)
Inrush current limit time 0.4 ms typ.
(types in which output voltage is internally set of HSOP-8A, HSOP-6, SOT-89-5, SSC pin = open)
Inrush current limit time 0.4 ms typ.
(types in which output voltage is externally set of HSOP-8A, HSOP-6, SOT-89-5) - Built-in ON / OFF circuit
- Ensures long battery life.
- Discharge shunt function “available” / “unavailable” is selectable.
- Pull-down function “available” / “unavailable” is selectable.
- Operation temperature range
- Ta = −40°C to +85°C
- Lead-free (Sn 100%), halogen-free
*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
Applications
- Constant-voltage power supply for battery-powered device
- Constant-voltage power supply for TV, notebook PC and home electric appliance
- Constant-voltage power supply for portable equipment