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UZ1085-XX-TN3-A-R中文资料

UNISONIC TECHNOLOGIES CO., LTD

UZ1085 LINEAR INTEGRATED CIRCUIT

3A ADJUSTABLE/FIXED LOW DROPOUT LINEAR REGULATOR

DESCRIPTION

The UZ1085-xx series are low dropout three-terminal regulators with 3A output current capability. These devices have been optimized for low voltage applications including VTT bus termination, where transient response and minimum input voltage are critical.

Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperatures.

FEATURES

*Fast transient response

*Low dropout voltage at up to 3A *Load regulation:0.05% typical *Trimmed current limit *On-chip thermal limiting *Pb-free plating product number: UZ1085L-xx

ORDERING INFORMATION

Order Number Pin Assignment

Normal Lead Free Plating Package 1 2 3

Packing

UZ1085-xx-TA3-A-T UZ1085L-xx-TA3-A-T TO-220 A/G O I Tube UZ1085-xx-TN3-A-R UZ1085L-xx-TN3-A-R TO-252 A/G O I Tape Reel UZ1085-xx-TN3-A-T UZ1085L-xx-TN3-A-T TO-252 A/G O I Tube UZ1085-xx-TQ2-A-R UZ1085L-xx-TQ2-A-R TO-263 A/G O I Tape Reel UZ1085-xx-TQ2-A-T UZ1085L-xx-TQ2-A-T TO-263 A/G O I Tube UZ1085-xx-TQ3-A-R UZ1085L-xx-TQ3-A-R TO-263-3 A/G O I Tape Reel UZ1085-xx-TQ3-A-T UZ1085L-xx-TQ3-A-T TO-263-3 A/G O I Tube

Note: 1. xx: Output Voltage, refer to Marking Information.

MARKING INFORMATION

THERMAL DATA

PARAMETER SYMBOL RATINGS UNIT

TO-252 12

TO-220 4

Thermal Resistance Junction-Case TO-263

ΘJC 4

°C/W

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN 18 V

(V IN – V OUT ) * I OUT See Figure 1

Junction Temperature T J +125 ℃ Operating Temperature T OPR -20 ~ +85

℃ Storage Temperature T STG -40 ~ +150 ℃ Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

2. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range and assured by design from -20℃~+85℃.

ELECTRICAL CHARACTERISTICS (Ta=25℃, C OUT =22μF, unless otherwise specified.)

For UZ1085-ADJ(Adjustable)

PARAMETER SYMBOL

TEST CONDITIONS MIN. TYP. MAX.UNIT

Reference Voltage V REF

1.5V ≦(V IN – V OUT )≦8.25V

10mA ≦I OUT ≦3A

1.225 1.25 1.275V Line Regulation ?V OUT

(V OUT +1.5V) ≦V IN ≦12V,

I OUT =10mA

0.005 0.2% Load Regulation ?V OUT (V IN – V OUT )=3V, 10mA ≦I OUT ≦3A

0.05 0.5% Dropout Voltage V D

△V REF %=1%, l OUT =3A 1.30 1.40V Current Limit I LIMIT (V IN -V OUT )=2V 3.1 4 A Adjust Pin Current Iadj 35 120μA

Adjust Pin Current Change ?Iadj 1.5V ≦（V IN – V OUT ）≦12V ，

10mA ≦I OUT ≦3A

0.2 5 μA

Minimum Load Current I O(MIN) 1.5V ≦(V IN -V OUT )≦12V

10 mA Quiescent Current I Q V IN =12V 4 13 mA

Ripple Rejection RR

f=120Hz,Tantalum,(V IN –V OUT )=3V

I OUT =3A

60 72 dB Thermal Regulation Ta=25℃,30ms pulse 0.004 0.02%/W

Temperature Stability ?V OUT 0.5 %

Long-Term Stability ?V OUT Ta=125℃, 1000hr

0.03 1.0% Output Noise(% of V OUT ) eN Ta=25℃,10Hz ≦f ≦10kHz 0.003 %

Thermal Shutdown 150 °C

For UZ1085-xx(Fixed Voltage)

PARAMETER SYMBOL

TEST CONDITIONS MIN. TYP. MAX.UNIT

UZ1085-15 3.0V ≤V IN ≤8.5V, 10mA ≤I OUT ≤3A 1.470 1.5 1.530UZ1085-18

3.3V ≤V IN ≤8.8V, 10mA ≤I OUT ≤3A 1.764 1.8 1.830UZ1085-25

4.0V ≤V IN ≤9.5V, 10mA ≤I OUT ≤3A 2.450 2.5 2.550UZ1085-33 4.8V ≦V IN ≦10.3V, 10mA ≦I OUT ≦3A 3.234 3.3 3.366Output Voltage UZ1085-50

V OUT 6.5V ≦V IN ≦12V, 10mA ≦I OUT ≦3A 4.900 5.0 5.100V Line Regulation ?V OUT (V OUT +1.5V)≦V IN ≦12V,I OUT =10mA 0.005 0.2% Load Regulation ?V OUT (V IN – V OUT )=3V, 10mA ≦I OUT ≦3A 0.05 0.5% Dropout Voltage V D △V REF %=1%, l OUT =3A 1.30 1.40V Current Limit I LIMIT (V IN -V OUT )=2V 3.1 4 A Minimum Load Current ?Iadj 1.5V ≦(V IN -V OUT )≦12V 10 mA

Quiescent Current I Q

V IN =

12V 4 13 mA Ripple Rejection RR

f=120Hz, Tantalum,

(V IN – V OUT )=3V,I OUT =3A 60 72 dB Thermal Regulation Ta=25℃,30ms pulse 0.004 0.02%/W

Temperature Stability ?V OUT Ta=125℃, 1000hr

0.5 % Long-Term Stability ?V OUT 0.03 1.0%

Output Noise(% of V OUT ) eN Ta=25℃,10Hz ≦f ≦10kHz 0.003 %

Thermal shutdown 150

°C

TYPICAL APPLICATION CIRCUIT

V IN =12V

V IN =9V

9V at 3A 3.3V at 3A

TYPICAL CHARACTERISTICS

1.41.31.50.5

1.21.11.00.90.80.7

0.6Output Current (A)

Figure 2. Dropout Voltage vs.Output Current

D r o p o u t V o l t a g e (V )

0.10

0.05

0-0.05

-0.10-0.15

-0.20

-75-50-25

0255075100125150175

Junction Temperature (℃)

Figure 3. Load Regulation vs.Temperature

O u t p u t V o l t a g e D e v i a t i o n (

I O U T (A m p s )

Figure 1. Absolute Maximum Sate Operating Area

V IN -V OUT (V)

1.260

1.255

1.2501.2451.2401.2351.2301.2251.2201.215

1.210

-75-5075Junction Temperature (℃)

Figure 4. Reference Voltage vs.Temperature

R e f e r e n c e V o l t a g e (V )

3.703.65

3.603.553.503.453.403.353.303.25

3.20

Junction Temperature (℃)

Figure 5. Output Voltage vs.Temperature

R e f e r e n c e V o l t a g e (V )

-75-5075Junction Temperature (℃)Figure 6. Minimum Load Current vs .Temperature

M i n m u m L o a d C u r r e n t (m A )

TYPICAL CHARACTERISTICS(Cont.)

5.0

4.5

4.0

3.5

Junction Temperature (℃)

Figure 8. Short-Circuit Current vs .Temperature

S h o r t -C i r c u i t C u r r e n t (A )

3.0

30209010100

10k 80

706050400Frequency (Hz)

Figure 9. Ripple Rejection vs.Frequency

R i p p l e R e j e c t i o n s (d B )

1009080

Junction Temperature (℃)

Figure 7. Adjust Pin Current vs.Temperature A d j u s t P i n C u r r e n t (|ìA )

5040302010

7060508090100110P o w e r (W )

Figure 10. Maximum Power Dissipation

Case Temperature (℃)

120130140150