AP1184 ANACHIP [Anachip Corp], AP1184 Datasheet

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AP1184

Manufacturer Part Number
AP1184
Description
4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
Manufacturer
ANACHIP [Anachip Corp]
Datasheet

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4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
1.5V, 1.8V, 2.5V, 3.3V, 5.0V
0.7V maximum dropout voltage at 4A load current
Built-in Thermal shutdown
Output current limiting
Adjustable or fixed output voltage
Fast transient response
Good noise rejection
Packages: SOP-7L, TO220-5L and TO263-5L
Feature
Typical Application
Ordering Information
Low Dropout Regulator
3.3V
470uF
+
470uF
5V
S7:SOP-7L
K5:TO263-5L
T5:TO220-5L
+
Package
AP1184 X X X X
GND
Vsense
Vctrl
Vin
AP1184-2.5V
Blank : Adj
15 = 1.5V
18 = 1.8V
25 = 2.5V
33 = 3.3V
50 = 5.0V
Vout
1/11
Vout
Vout
NC
Vin
AP1184 is a 4A regulator with extremely low
dropout
designed to provide well regulated supply for
applications requiring 2.8V or lower voltages from
3.3V ATX power supplies where high efficiency of
the switch can be achieved without the cost and
complexity associated with switching regulator. One
such application is the new graphic chipsets that
requires anywhere from 2.4V to 2.7V supply.
General Description
Blank : Normal
L : Lead Free Package
voltage.
Lead Free
This
470uF
+
product
Blank : Tube
A : Taping
2.5V/4A
Packing
AP1184
Rev.1.1 Sep 7, 2004
is
specifically

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AP1184 Summary of contents

Page 1

... This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. General Description AP1184 regulator with extremely low dropout voltage. ...

Page 2

... Anachip Corp. www.anachip.com. 1.25V - CURRENT LIMIT Vsense 2 7 Vout 3 6 Vctrl Vin Vin AP1184S7 ) Description 2/11 AP1184 Vout Vsense + + Adj FRONT VIEW Vin 5 Vctrl 4 3 Vout Adj(GND Vsense Tab is Vout (AP1184T5) Rev.1.1 Sep 7, 2004 ...

Page 3

... REF Line Regulation AP1184-XXX AP1184-1.5 AP1184-1.8 V Output Voltage AP1184-2.5 out AP1184-3.3 AP1184-5.0 AP1184-Adj AP1184-1.5 AP1184-1.8 Load Regulation AP1184-2.5 AP1184-3.3 AP1184-5.0 Vadj=0V for all conditions below. Dropout Voltage Vin=2.05V, Io=1.5A (Vctrl –Vout) Vin=2.05V, Io=3A Vin=2.05V, Io=4A Vadj=0V for all conditions below. Dropout Voltage V =2 ...

Page 4

... TO-220: Control Circuitry/Power Transistor Junction-to-Case JC SOP-7: Control Circuitry/Power Transistor NOTE: AP1184-ADJ incorporates an internal thermal shutdown that protects the device when the junction temperature exceeds the allowable maximum junction temperature. Package Max Pd. TO263/TO220 2.4W~4.4W With heat sink or amount of copper board needed. ...

Page 5

... This is summarized in the above equation. Since the minimum load current requirement AP1184-ADJ is 10mA typically selected 121 Ω resistor so that it automatically satisfies this condition. Notice that since the Iadj is typically in the range of 50uA it only adds a small error to the Vin Vin ...

Page 6

... Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator Functional Descriptions(Continued) Thermal Design The AP1184-XXX incorporates an internal thermal shutdown that protects the device when the junction temperature exceeds the allowable maximum junction temperature. Although this device can operate with junction temperatures in the range of ...

Page 7

... C 100 50 2.5 3.0 3.5 4.0 0 0.5 0 Vpower Dropout Voltage vs Output Current 100 120 0 Load Regulation vs Output Current 7/11 AP1184 Tj = 120 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Output Current ( 120 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Output Current (A) Rev.1.1 Sep 7, 2004 ...

Page 8

... Part Number Anachip Corp. www.anachip.com.tw Transient Response XX: ( Top View) Blank=adj,15= 1.5V, 18= 1.8V, 25=2.5V 33= 3.3V, 50= 5.0V 1184-XX Blank: normal L: Lead Free Package Internal code ( Optional Nth week : 01~ Year : "01"=2001 ( SOP-7L / TO220-5L / TO263-5L ) 8/11 AP1184 V = 5.0V CONTROL V = 3.3V POWER V = 2.5V OUT C =10uF CONTRROL C = 100uF POWER C = 0.1uF ADJ ...

Page 9

... AP1184 F J1 Nom. Max. 0.175 0.190 0.035 0.040 0.020 0.025 0.585 0.610 0.400 0.415 0.067 0.073 0.268 0.273 0.050 0.055 0.243 0.270 0.108 0.125 0.550 0.580 0.150 0.155 0.107 0.115 Rev.1.1 Sep 7, 2004 ...

Page 10

... Land Pattern Recommendation (Unit: mm Dimensions In Inches Nom. Max. Min. 4.46 4.85 0.160 0.84 1.02 0.026 0.50 0.64 0.014 1.27 1.40 0.045 9.15 9.65 0.341 10.16 10.54 0.385 1.71 1.85 0.062 15.24 15.88 0.575 2.54 2.79 0.090 - 2.92 - 10/11 AP1184 10.9 1.7 Nom. Max. 0.176 0.191 0.033 0.040 0.020 0.025 0.050 0.055 0.360 0.380 0.400 0.415 0.068 0.073 0.600 0.625 0.100 0.110 - 0.115 Rev.1.1 Sep 7, 2004 ...

Page 11

... AP1184 e D Nom. Max. 0.236 0.244 0.154 0.157 0.152 0.155 0.192 0.194 0.066 0.070 0.016 0.019 0.050 0.054 0.009 0.010 0.041REF 0.027 0.035 0.057 0.061 o 7 Rev.1.1 Sep 7, 2004 ...

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