CS8221 CHERRY | Alldatasheet

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Technical content

Features

+ - Current Limit Sense Current Source (Circuit Bias) Gnd Sense* * 8 Lead SO Narrow D2PAK n Low Quiescent Current (60µA @ 100µA load) n 5V , ±2% Output n 100mA Output Current Capability n Fault Protection +74V Peak Transient Voltage -15V Reverse Voltage Short Circuit Thermal Shutdown Low Reverse Current (Output to Input) Package Options CS8221 Micropower 5V , 100mA Low Dropout Linear Regulator CS8221

Description

The CS8221 is a precision 5V, 100mA micropower voltage regula- tor with very low quiescent current (60µA typical at 100µA load). The 5V output is accurate within ±2% and supplies 100mA of load current with a maximum dropout voltage of only 600mV. The regulator is protected against reverse battery, short circuit, over voltage, and over temperature con- ditions. The device can withstand 74V load dump transients making it suitable for use in automotive envi- ronments. Block Diagram 3L D2PAK Tab (Gnd) 1. VIN 2. Gnd 3. VOUT Absolute Maximum Ratings Lead Temperature Soldering 1VIN VOUT NC Sense Gnd Gnd Gnd Gnd 8L SO Narrow (Internally Fused Leads) A Company ¨ Rev. 12/28/98 Consult factory for TO-92. Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com

Electrical Characteristics: 6V ² VIN ² 26V, IOUT = 1mA, -40¡ ² TA ² 125¡C, -40¡ ² TJ ² 150¡C; unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CS8221 Package Lead Description PACKAGE LEAD # LEAD SYMBOL FUNCTION n Output Stage Output Voltage, VOUT 9V<VIN<16V, 100µA ² IOUT ² 100mA 4.90 5.00 5.10 V 6V ² VIN ² 26V, 100µA ² IOUT ² 100mA 4.85 5.00 5.15 V Dropout Voltage (VIN-VOUT)I OUT = 100mA 400 600 mV IOUT = 100µA 100 150 mV Load Regulation V IN = 14V 5 50 mV 100µA ² IOUT ² 100mA Line Regulation 6V<V<26V 5 50 mV IOUT = 1mA Quiescent Current, (IQ)I OUT = 100µA, VIN = 6V 60 120 µA IOUT ² 50mA 4 6 mA IOUT ² 100mA 12 20 mA Ripple Rejection 7V ² V IN ² 17V, IOUT = 100mA, 60 75 dB f = 120Hz Current Limit 125 200 mA Short Circuit Output Current V OUT = 0V 40 125 µA Thermal Shutdown (Note 1) 150 180 ¡C Overvoltage Shutdown V OUT ² 1 V 3 03 43 8 V Reverse Current V OUT = 5V, VIN = 0V 100 500 µA Note 1: This parameter is guaranteed by design, but not parametrically tested in production. 8L SO Narrow 3L (Internally Fused Leads) D2PAK 11 V IN Input voltage. 23 V OUT 5V, ±2%, 100mA output. 3 Ð NC No connection. 4 Ð Sense Kelvin connection which allows remote sensing of the output voltage for improved regulation. If remote sensing is not required, connect to V OUT. 5,6,7,8 2 Gnd Ground.

delay, load transient response and loop stability. turers data sheet usually provides this information. tions, however it is not necessarily the optimized solution. the longer leads is negligible. ensure a stable design under steady state conditions. case load conditions for the regulator at low temperature. 3 and vary the input voltage until the oscillations increase. circuit and thermal runaway conditions (Figure 1). enables the IC to survive unexpected voltage transients. exceed 180ûC (typ) the power transistor is turned off. Figure 1. Typical Circuit Waveforms for Output Stage Protection. **C1 is required if regulator is distant from power source filter. ***C2 is required for stability.

working environment. Vary the ESR to reduce ringing. instructed in step 5 to test for any oscillations. Figure 2. Single output regulator with key performance parameters will keep the die temperature below 150¡C. RQSA = the heatsinkÐtoÐambient thermal resistance. sheets of heat sink manufacturers.

Thermal Data 8 Lead 3 Lead SO Narrow D 2PAK (internally fused leads) RQJC typ 25 4.2 ûC/W RQJA typ 110 10-50* ûC/W *Depending on thermal properties of substrate.RQJA = RQJC + RQCA D Lead Count Metric English Max Min Max Min 8L SO Narrow 5.00 4.80 .197 .189 (internally fused leads) Package Specification PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA CS8221 Surface Mount Narrow Body (D); 150 mil wide 0.33 (.013) 6.20 (.244) 5.80 (.228) 4.00 (.157) 3.80 (.150) 1.57 (.062) 1.37 (.054) D 0.25 (0.10) 0.10 (.004) 1.75 (.069) MAX 1.27 (.050) 0.40 (.016) REF: JEDEC MS-012 0.25 (.010) 0.19 (.008)

CS8221YDF8 8L SO Narrow (internally fused leads) CS8221YDFR8 8L SO Narrow (internally fused leads) (tape & reel) CS8221YDP3 3L D 2PAK CS8221YDPR3 3L D 2PAK (tape & reel)

Ordering Information

Rev. 12/28/98 Package Specification © 1999 Cherry Semiconductor Corporation Cherry Semiconductor Corporation reserves the right to make changes to the specifications without notice. Please contact Cherry Semiconductor Corporation for the latest available information.

3 Lead D2PAK (DP)

2.54 (.100) REF 10.31 (.406) 10.05 (.396) 8.53 (.336) 8.28 (.326) 0.91 (.036) 0.66 (.026) 1.40 (.055) 1.14 (.045) 4.57 (.180) 4.31 (.170) 1.68 (.066) 1.40 (.055) 2.74(.108) 2.49(.098) 1.40 (.055) 1.14 (.045) 0.10 (.004) 0.00 (.000) .254 (.010) REF 15.75 (.620) 14.73 (.580) 2.79 (.110) 2.29 (.090)