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ISSUED DATE :2005/03/14 REVISED DATE :2006/06/01B
GE1086
The GE1086 is a low dropout positive adjustable or fixed-mode regulator with minimum of 1.5A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. GE1086 is also well suited for other applications such as VGA cards. GE1086 is guaranteed to have <1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0V with 4.7 to 12V input supply by different output voltage.
1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator Description
Features & 3-Terminal Adjustable or fixed 1.5V,1.8V,2.5V,3.3V,5.0V
&1.4V Maximum Dropout at Full Load current &Fast Transient response &Built-in Thermal Shutdown &Output current limiting
Package Dimensions
REF. A b c D E L4 L5
Millimeter Min. Max. 4.40 4.80 0.76 1.00 0.36 0.50 8.60 9.00 9.80 10.4 14.7 15.3 6.20 6.60
REF. c1 b1 L e L1 Ø A1
Millimeter Min. Max. 1.25 1.45 1.17 1.47 13.25 14.25 2.54 REF. 2.60 2.89 3.71 3.96 2.60 2.80
Typical Circuit
Block Diagram
GE1086
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ISSUED DATE :2005/03/14 REVISED DATE :2006/06/01B
Pin Descriptions
Name Adj (GND) Vout O I/O Pin# 1 2 Adjustable (Ground only for fixed mode) The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.4V higher than Vout in order for the device to regulate properly. Function
Vin
I
3
Absolute Maximum Ratings
Symbol Vin PD TST TOP DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Parameter Ratings -0.3 to 12 Internally Limited -65 ~ + 150 0 ~ + 150 Unit V
Electrical Characteristics
Parameter Reference Voltage GE1086-Adj GE1086-1.5 GE1086-1.8 Output Voltage GE1086-2.5 GE1086-3.3 GE1086-5.0 Line Regulator GE1086-XXX GE1086ADJ GE1086-1.5 Load Regulation GE1086-1.8 GE1086-2.5 GE1086-3.3 GE1086-5.0 Dropout Voltage (Vin-Vout) Current Limit Minimum Load Current Adjust Pin Current Quiescent Current Thermal Regulation GE1086-XXX GE1086-XXX Adjustable model Adjustable model fixed model TA=25 : , 30ms pulse F=120Hz, COUT=25uF, Tantalum, Io=1.5A GE1086-XXX Temperature Stability Thermal Resistance Junction-to-Ambient Thermal Resistance Junction-to-Case Io=10mA Vin=Vout+3V Control Circuitry/Power Transistor 60 0.5 86 0.65/2.7 70 dB % : /W : /W Conditions Io=10mA, TJ =25 : , (Vin-Vout )=1.5V Io=10mA, TJ =25 : , 3.0V Vin 12V Io=10mA, TJ =25 : , 3.3V Vin 12V Io=10mA, TJ =25 : , 4.0V Vin 12V Io=10mA, TJ =25 : , 4.8V Vin 12V Io=10mA, TJ =25 : , 6.5V Vin 12V Io=10mA, Vout+1.5
