CS5257A-1GDPR5 Cherry Semiconductor Corporation, CS5257A-1GDPR5 Datasheet
CS5257A-1GDPR5
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CS5257A-1GDPR5 Summary of contents
Page 1
... This circuitry, which includes over- current, short circuit, supply sequencing and overtemperature protection will self protect the regu- lator under all fault conditions. The CS5257A-1 is ideal for generat- ing a secondary 2-2.5V low voltage supply on a motherboard where both 5V and 3.3V are already avail- able. ...
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V Input Voltage .................................................................................................................................................................6V POWER V Input Voltage ...........................................................................................................................................................13V CONTROL Operating Junction Temperature Range...........................................................................................................0¡C ² T Storage Temperature Range ................................................................................................................................-65¡C to +150¡C Lead Temperature Soldering Wave Solder (through hole styles only) .....................................................................................10 sec. max, 260¡C peak Reflow (SMD styles only) ...
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Electrical Characteristics: 0¡C ² T PARAMETER V Supply Only V POWER POWER Output Current V ADJUST Note 1: The minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider used to set ...
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Reference Voltage vs Temperature 0.100 0.075 0.050 0.025 -0.000 -0.025 -0.050 I =10mA 0 -0.075 V =2.75V, CONTROL -0.100 V =2.05V POWER -0.125 -0.150 100 110120130 T (°C) J Transient ...
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Typical Performance Characteristics: continued Adjust Pin Current vs V CONTROL 75.00 V =2.05V POWER IL=10mA 74.00 73.00 72.00 71.00 70.00 1.0 2.0 3.0 4.0 5.0 6.0 7 (V) CONTROL OUT Adjust Pin Current vs V POWER - 75.00 ...
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... The output can never come up unregulated. The CS5257A-1 can also be used as a single supply device with the control and power inputs tied together. In this mode, the dropout will be determined by the minimum control voltage ...
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... A 0.1µF tantalum capacitor is recom- mended for Òfirst cutÓ design. Value and type may be var- ied to optimize performance vs. price. Other Adjustable Operation Considerations The CS5257A-1 linear regulator has an absolute maximum specification of 6V for the voltage difference between V and V . However, the IC may be used to regulate volt- OUT ages in excess of 6V ...
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... QSA The value for R the TO-220 and D lator such as the CS5257A-1 the majority of heat is generat the power transistor section. The value for R depends on the heat sink type, while the R factors such as package type, heat sink interface (is an insulator and thermal grease used?), and the contact area between the heat sink and the package ...
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... Ordering Information Part Number Description CS5257A-1GT5 5L TO-220 Straight 2 CS5257A-1GDP5 CS5257A-1GDPR5 5L D Rev. 4/5/99 Package Specification Thermal Data R QJC R QJA 1.40 (.055) *Depending on thermal properties of substrate. R 1.14 (.045) 2.74(.108) 2.49(.098) 2.79 (.110) 2.29 (.090) .254 (.010) REF 5 Lead TO-220 (T) Straight 4 ...