sc900imltrt Semtech Corporation, sc900imltrt Datasheet
sc900imltrt
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sc900imltrt Summary of contents
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POWER MANAGEMENT Description The SC900 is a highly integrated power management device for low power portable applications. The device contains five adjustable low-dropout linear regulators (LDOs) with CMOS pass-devices as well as a band-gap reference interface, and ...
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POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise noted 3.7V ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise noted 3.7V ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise noted: VIN = 3.7V VIN ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise noted 3.7V ...
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POWER MANAGEMENT Pin Configuration LDOB 1 TOP VIEW INB 2 SDA 3 SCL MLPQ20: 4X4 20 LEAD 2005 Semtech Corp. Ordering Information ...
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POWER MANAGEMENT Pin Description ...
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POWER MANAGEMENT Block Diagram INA INB INB VIN EN I2C Interface en VASEL vasel SCL scl SDA sda A0 a0 VOB ARST LDOPGD INCD INE 2005 Semtech Corp. Reference DACs DAC A en DAC B DAC C DAC D DAC ...
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POWER MANAGEMENT Applications Information General Description Each of the five low-dropout linear regulators (LDOs) can be independently enabled or disabled and their output voltages can each be set by an independent DAC. These controls can be accessed through the I ...
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POWER MANAGEMENT Applications Information (Cont.) Active Shutdown The shutdown control bits determine how the on-chip active shutdown switches behave. Each LDO register uses bit 5 of the LDO output voltage data byte to control the shutdown behavior. When the active ...
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POWER MANAGEMENT Applications Information (Cont.) Layout Considerations Layout is straightforward if you use the Gerber files on page reference. Notice that the input voltage feed to the SC900 is on the bottom of the board and vias ...
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POWER MANAGEMENT Applications Information (Cont.) Output Voltage Code Bits: A 5-bit linear DAC controls the output voltage of each LDO. The DAC and error-amp gain are scaled so that the LSB size at the output is 50mV. Output voltage can ...
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POWER MANAGEMENT Applications Information (Cont.) Supported Formats Direct Format - Write The simplest format for write is the direct format. After the start condition [S], the slave address is sent, 2 followed by an eighth bit indicating ...
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POWER MANAGEMENT Applications Information (Cont.) Stop Separated Reads Another read format is available which is, in effect, an extension of the combined format read. This format allows a master to set up the register address pointer for a read and ...
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POWER MANAGEMENT Timing Diagrams LDO OUTA V ARST 90% V LDO & OUT TH V LDOPGD 90% V LDO On/Off Control via the I STOP SCL SDA V LDOn 40us 2005 ...
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POWER MANAGEMENT Timing Diagram Default Start-Up, Shut-Down Timing Diagram Enable VREF LDO A LDO B LDO C LDO D LDO E ARST LDOPGD 15ms 2005 Semtech Corp. 100ms 17 SC900 200us 100ms 15ms www.semtech.com ...
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POWER MANAGEMENT Typical Characteristics Dropout Voltage (LDOA) 180 160 140 T = 85°C A 120 100 100 Load Current (mA) Load Regulation (LDOA- 25° 3. ...
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POWER MANAGEMENT Typical Characteristics Line Transient V = 3.7V 100mA IN 100µs/div 2005 Semtech Corp. Load Transient (LDOA- 3.7V 10mA to 150mA step 500mV/div Vo 10mV/div 19 SC900 Vo 20mV/div Io ...
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POWER MANAGEMENT Evaluation Board R1 150 D1 LDOPGD Q1 FMMT3904 +5V EXTRNAL 10uF EXTERNAL SUPPLY SC900 PWR SW1 R12 R13 R14 R15 C11 SC900 Power Select 150 150 100K 100K 0.1uF BOARD D4 D5 EXTERNAL USB ...
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POWER MANAGEMENT Evaluation Board Gerbers Top Gerber Bottom Gerber 2005 Semtech Corp. Top Silk Screen Gerber Bottom Silk Screen Gerber 21 SC900 www.semtech.com ...
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POWER MANAGEMENT Outline Drawing - MLPQ-20L PIN 1 INDICATOR (LASER MARK) A aaa C E1 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. 2. ...
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... COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805) 498-2111 FAX (805)498-3804 2005 Semtech Corp. DIM Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Visit us at: www.semtech.com 23 SC900 DIMENSIONS INCHES MILLIMETERS (.155) (3.95) .122 3.10 .106 2.70 ...