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TA4800AF
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA4800AF
1A Output Current Low Dropout Voltage Regulator
The TA4800AF consists of small-surface mount type low-dropout regulators with an output current of 1 A (maximum). The output voltage can be arbitrarily set by external resistance.
Features
* * * * * * * * Maximum output current : 1 A Output voltage Low quiescent current Low-dropout voltage Protection function Package type : VOUT = 1.5 V 9.0 V : 850 A (Typ.) (@VOUT = 3.3 V ,IOUT = 0 A) : VD = 0.5 V (Max) (@VOUT = 3.3 V, IOUT = 500 mA) : Over current protection / thermal shutdown : Surface-mount New PW-Mold5pin Reference voltage accuracy : VREF 2.5% (@Tj = 25C) Low standby current (output OFF mode): 0.5 A (Typ.)
HSIP5-P-1.27B Weight : 0.36 g (Typ.)
Pin Assignment
Mark
1
NC
2
3
4
5
IN GND OUT ADJ
Marking
3
4800
AF
12345
Part No. (or abbreviation code) Lot No. A line indicates lead (Pb) - free package or lead (Pb) - free finish.
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TA4800AF
Pin Description
Pin No. 1 2 3 4 5 Symbol NC IN GND OUT ADJ Non-connection Input terminal. Connected by capacitor (CIN) to GND. Ground terminal Output terminal. Connected by capacitor (COUT) to GND. Output voltage feedback to regulator. It is connected to an error amplifier with VREF=1.245 V (Typ.). Description
How to Order
Product No. TA4800AF (T6L1,Q) Package New PW-Mold5pin : Surface-mount Package Type and Capacity Tape (2000 pcs/reel)
Block Diagram
IN Over-current protection OUT
Overtemperature protection
Control circuit Reference voltage 1.245 V (Typ.)
ADJ
GND
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Absolute Maximum Rating (Ta = 25C)
Characteristic Input voltage Output current Operating junction temperature Junction temperature Storage temperature Power dissipation Thermal resistance Ta = 25C Tc= 25C junction-ambient junction-case Symbol VIN IOUT Tj(opr) Tj Tstg PD Rth(j-a) Rth(j-c) Rating 16 1 -40~135 150 -55~150 1 10 125 12.5 Unit V A C C C W
C/W
Note 1: Do not apply current and voltage (including reverse polarity) to any pin that is not specified. Note 2: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/Derating Concept and Methods) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
Operating Input Voltage Range
Characteristic Input voltage Symbol VIN Min 2.5(Note2) Typ. Max 16.0 Unit V
Note 3: This is the voltage at which the IC begins operating. VD must be considered when determining the best input voltage for the application.
Output Voltage Range
Characteristic Output voltage Symbol VOUT Min 1.5 Typ. Max 9.0 Unit V
Protection Function (Reference)
Characteristic Thermal shutdown Thermal shutdown hysteresis width Peak circuit current Symbol TSD TSD(hys) IPEAK VIN = 4.3 V VIN = 5.3 V, Tj = 25C VIN = 8.3 V, Tj = 25C VIN = 5.3 V, Tj = 25C VIN = 16V , Tj = 25C Test Condition Min 150 Typ. 170 15 1.7 2.0 1.1 0.7 Max Unit C C A
Short circuit current
ISC
A
Note 4: Ensure that the devices operate within the limits of the maximum rating when in actual use.
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Electrical Characteristics
Characteristic Reference voltage Line regulation Load regulation
(Unless otherwise specified, VEN = VIN, VOUT = 3.3 V, CIN = 0.33 F, COUT = 3.3 F, Tj = 25C)
Symbol VREF Regline Regload VIN = 4.3 V 4.3 V < VIN < 8.3 V, = = IOUT = 500 mA VIN = 4.3 V, 5 mA < IOUT < 1 A = = 4.3 V < VIN < 8.3 V, = = IOUT = 0 A 4.3 V < VIN < 8.3 V, = = IOUT = 1 A VIN = 2.1 V, IOUT = 0 A VIN = 3.5 V, IOUT = 1 A VIN = 5.3 V, IOUT = 50 mA, 10 Hz < f < 100 kHz == VIN = 5.3 V, IOUT = 50 mA, f = 120 Hz IOUT = 500 mA IOUT = 1 A VIN = 5.3 V, IOUT = 5 mA, 0C < Tj < 125C == Test Condition Min 1.214 Typ. 1.245 8 5 0.85 10 3.3 17.0 100 63 0.32 0.69 0.3 Max 1.276 24 20 1.70 mA 20 4.0 28.5 0.50 mA Vrms dB V mV/C Unit V mV mV
Quiescent current
IB
Starting quiescent current Output noise voltage Ripple rejection Dropout voltage Average temperature coefficient of output voltage
IBstart VNO R.R. VD TCVO
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Electrical Characteristics Common to All Products
* Tj = 25C in the measurement conditions of each item is the standard condition when a pulse test is carried out, and any drift in the electrical characteristic due to a rise in the junction temperature of the chip may be disregarded.
Standard Application Circuit
CIN 0.33 F IN OUT TA4800AF GND ADJ R2 R1 COUT 3.3 F Load
* Be sure to connect a capacitor near the input terminal and output terminal between both terminals and GND. The use of a monolithic ceramic capacitor (B Characteristic or X7R) of low ESR (equivalent series resistance) is recommended. The IC may oscillate due to external conditions (output current, temperature, or the type of the capacitor used). The type of capacitor required must be determined by the actual application circuit in which the IC is used.
Setting Output Voltage
* The output voltage is determined by the equation shown below. When you control the output voltage with R1, a recommended value to use for R2 is 5 k. R1 and R2must be placed as close as possible to each other, and the board trace to the ADJ terminal must be kept as short as possible.
R1 VOUT = VREF x ( 1 + ) R2
The notice in case of application
* The IC might be destroyed if a voltage greater than the input terminal voltage is applied to the output terminal, or if the input terminal is connected to GND during operation. To prevent such an occurrence, connect a diode as in the following diagram.
CIN 0.33 F
IN
OUT TA4800AF GND ADJ R2 R1
COUT 3.3 F Load
* There is a possibility that internal parasitic devices may be generated when momentary transients cause a terminal's potential to fall below that of the GND terminal. In such case, that the device could be destroyed. The voltage of each terminal and any state must therefore never fall below the GND potential.
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PDmax - Ta (W)
12 Ta = Tc Condition: Number of IC = 1 Reflow soldering on a ceramic substrate 3.5 VIN = 5.3 V VOUT = 3.3V
VOUT - Tj
PDmax
(V) VOUT
10
3.4
8
Allowable power dissipation
I OUT = 5 mA 3.3
100 mA 500 mA
4
50 x 50 x 0.8 mmt 30 x 30 x 0.8 mmt Single
Output voltage
60 80 100 120 140 160
6
3.2
2
0
0
20
40
3.1 -50
0
50
100
150
Ambient temperature
Ta
(C)
Junction temperature
Tj
(C)
VOUT - VIN
4 20
I B - VIN
Tj = 25C
3 10 mA 2
I B (mA) Quiescent current
(V)
I OUT = 500 mA 100 mA
15
VOUT
Output voltage
10 I OUT = 500 mA
1 VOUT = 3.3V 0 Tj = 25C 0 2 4 6 8
5 100 mA 10 mA
0
0
2
4
6
8
Input voltage
VIN
(V)
Input voltage
VIN
(V)
I B - Tj
30 VIN = 5.3 V 30
I B - IOUT
VIN = 5.3 V Tj = 25C
I B (mA)
20 I OUT = 1 A
I B (mA) Quiescent current
100 150 0A 0 50
20
Quiescent current
10
10
0 -50
0
0
200
400
600
800
1000
Junction temperature
Tj
(C)
Output curren
I OUT
(mA)
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VOUT - I OUT
3.5 4
VOUT - I OUT
(V)
3.4
(V) VOUT
Output voltage
VIN = 5.3 V VOUT = 3.3V Tj = 25C
3
VOUT
3.3
Output voltage
2
3.2
1 VIN = 5.3 V VOUT = 3.3V Tj = 25C 0 0 0.5 1 1.5 2 2.5
3.1
0
200
400
600
800
1000
Output curren
I OUT
(mA)
Output curren
I OUT
(A)
VD - I OUT
0.8 0.8
VD - Tj
(V)
(V)
Tj = -40 0.6 85 25 0.4 125
0.6
I OUT = 1 A
VD
Dropout voltage
Dropout voltage
VD
0.4 500 mA 0.2 100 mA 1000 0 -50
0.2
0
0
200
400
600
800
0
50
100
150
Output curren
I OUT
(mA)
Junction temperature
Tj
(C)
I PEAK - Tj
2.5 3.0
I PEAK - VD I PEAK (A) Peak output current
I PEAK (A)
2.0
2.5
2.0
1.5
Peak output current
1.5
1.0
1.0
0.5 VIN = 5.3 V 0 -50 0 50 100 150
0.5 Ta = 25 0 0 5 10 15 20
Junction temperature
Tj
(C)
Dropout voltage
VD
(V)
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Package Dimensions
HSIP5-P-1.27B Unit : mm
1.50.2
6.50.2 5.20.2
0.6max
5.50.2
9.50.3
1.10.2 1.50.2 0.6max
0.60.1
0.70.1
0.7max 0.50.1
0.8max 0.50.1
2.30.2 1.27
Weight: 0.36 g (Typ.)
0.10.1
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RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
20070701-EN
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer's own risk. * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. * Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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