Maker : Seiko Instruments
Part No. : S-1701

  Datasheet PDF : S-1701.pdf
  Cross Reference : S-1701 Cross Reference
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Shortcut : S-1701  S-1702 

Product Information

Rev.2.4_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-1701 Series www.DataSheet4U.com The S-1701 Series, developed based on CMOS technology, is a voltage regulator with a reset function and integrates a highaccuracy voltage detector with on-chip delay circuit and a positive voltage regulator with a low dropout voltage and high output voltage on one chip. The S-1701 Series is available in many types according to the selection of the voltage detector block of the voltage detector, including a SENSE pin input product. A built-in low on-resistance transistor provides a low dropout voltage and large output current. Small ceramic capacitors are available and an external capacitor for delay is needless. Small SOT-23-5 and SOT-89-5 packages realize high-density mounting. Features Regulator block • Output voltage: • High-accuracy output voltage: • High peak current capability: • Built-in ON/OFF circuit: 1.5 to 5.0 V, selectable in 0.1 V steps. ±1.0% 400 mA output is possible (at VIN ≥ VOUT(S) + 2.0 V)*1 Ensures long battery life. During power-off: 0.1 µA typ., 1.0 µA max. • Low ESR capacitor can be used: A ceramic capacitor of 1.0 µF or more can be used for the output capacitor. 70 dB typ. (at 1.0 kHz) • High ripple rejection: Overcurrent of output transistor can be restricted. • Built-in overcurrent protector: 2.0 to 6.5 V • Operating voltage range: Detector block 1.5 to 5.5 V, selectable in 0.1 V steps. • Output voltage: • High-accuracy output voltage: ±1.0% Nch open-drain active low output • Output mode: • No need of an external capacitor for delay No delay (60 µs), 50 ms, 100 ms • Three delay time settings: 0.8 to 6.5 V • Operating voltage range: Whole regulator • Low current consumption During operation: 85 µA typ. SOT-23-5, SOT-89-5 • Small package: • Lead-free products *1. Attention should be paid to the power dissipation of the package when the output current is large. Applications • Power supply and reset circuit for battery-powered devices • Power supply for personal communication devices • Power supply for home appliances Packages Package Name SOT-23-5 SOT-89-5 Package MP005-A UP005-A Drawing Code Tape MP005-A UP005-A Reel MP005-A UP005-A 1 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.2.4_00 S-1701 Series Block Diagrams 1. S-1701 Series A/ B/ C/ G/ H/ J types *1 ON/OFF Overcurrent protector circuit ON/OFF circuit www.DataSheet4U.com VOUT ON/OFF pin : SENSE pin : Provided VIN connection + − Reference voltage circuit VIN + − VSS VDOUT Reference voltage circuit Oscillating counter timer (Delay circuit) *1 *1. Parasitic diode Figure 1 2. S-1701 Series D/ E/ F/ K/ L/ M types *1 ON/OFF Overcurrent protector circuit ON/OFF circuit Reference voltage circuit + − VOUT ON/OFF pin : SENSE pin : Provided VOUT connection VIN + − VSS VDOUT Reference voltage circuit Oscillating counter timer (Delay circuit) *1 *1. Parasitic diode Figure 2 2 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.2.4_00 S-1701 Series 3. S-1701 Series N/ P/ Q types *1 SENSE Overcurrent protector circuit ON/OFF circuit Reference voltage circuit + − VOUT ON/OFF pin : SENSE pin : VIN connection Provided www.DataSheet4U.com VIN + − VSS VDOUT Reference voltage circuit Oscillating counter timer (Delay circuit) *1 *1. Parasitic diode Figure 3 4. S-1701 Series R/ S/ T types *1 SENSE Overcurrent protector circuit ON/OFF circuit Reference voltage circuit + − VOUT ON/OFF pin : SENSE pin : VDOUT connection Provided VIN + − VSS VDOUT Reference voltage circuit Oscillating counter timer (Delay circuit) *1 *1. Parasitic diode Figure 4 Seiko Instruments Inc. 3 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.2.4_00 S-1701 Series 5. S-1701 Series U/ V/ W types *1 VOUT Overcurrent pr...

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