12

4964B–AUTO–07/07

ATA6842

7

V5A Auxiliary Linear Regulator

7.1 Output voltage

I(V5A) = –30 mA to 0 mA,

ß(NPN) > 200,

Uce,sat(NPN) < 1V,

U

U

V5A

V5A

4.65

5

5.35

V

A

7.2 Line regulation

V12 = 8V to 18V,

I(V5A) = –30 mA

V5A

V5A

lir

–10

+10

mV

A

7.3 Load regulation

V12 = 14V,

I(V5A) = –10 mA to –30 mA

V5A

V5A

lor

–20

+20

mV

A

7.4 Minimum capacitor

V5A

CV5A

3.3

10

µF

C

7.5 Minimum capacitor

V5A

ESR,V5A

0.5

10

Ω

C

7.6

Lower threshold

undervoltage

RESAN = low

V5A

VtU(V5A)

low

4V

A

7.7

Upper threshold

undervoltage

RESAN = high

V5A

VtU(V5A)

high

4.6

V

A

7.8

Lower threshold

overvoltage

RESAN = high

V5A

VtO(V5A)

low

5.4

V

A

7.9

Upper threshold

overvoltage

RESAN = low

V5A

VtO(V5A)

high

6V

A

7.10

Hysteresis under/

overvoltage

V5A

Vt(V5A)

hys

50

200

mV

A

7.11

Under/overvoltage

filter time

Not in standby mode

V5A

tfi(V5A)

8

30

µs

A

7.12 Short circuit current

V(B5A) = 0V

B5A

Isc(B5A)

0.3

1.5

mA

A

7.13 Pull-down resistor

V(B5A) = 1V

B5A

Rpd(B5A)

50

250

k

Ω

A

7.14 Pull-down current

V(B5A) = 6V

B5A

Ipd(B5A)

10

50

µA

A

7.15

Saturation voltage

high

Vs(B5A) = V12 – V(B5A),

V12 = 5.8V to 6.5V,

I(B5A) = –150 µA

T

B5A

Vs(B5A)

hi

0.35

0.45

0.55

V

V

V

A

5.

Electrical Characteristics (Continued)

Operating conditions: V12 = 6.5V to 26V, V5 = 5V ±3%, RREF = 10 k

Ω ±2%, T

No. Parameters

Test Conditions

Pin

Symbol

Min.

Typ.

Max.

Unit

Type*

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

Note:

1. Reduced operation mode means either

- Voltage at pin TCFET could be beyond specified limits