CURRENT SENSE AMPLIFIER SPECIFICATIONS

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Current Amp Gain

Over Temp

2.35

2.4

2.45

V/V

Available Output Current

±600

µA

Current Amp CMRR

Including inductive

flyback range, to 25kHz

60

dB (1)

(1) Charge buildup on current amp input must not occur.

DAC SECTION SPECIFICATION

General Parameters

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Differential Non linearity

1LSB

Integral Non lineraity

Best Fit

2

LSB

PSRR

10 - 14V

60

dB

Settle Time

90%

0.5

1.2

µs

Output Voltage Span

Vmin to Vmax

±2.5

V

Voltage Span Tolerance

-7

+7

%

Output Amp Impedance

full temp

5

Ω

Output Short cct Current

output shorted

1

mA

Coding

2’s Complement

PARK SECTION SPECIFICATIONS

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Park Voltage

0.45

0.5

0.55

V

3.3V Voltage Regulator

VOLTAGE REGULATOR SPECIFICATIONS

Current Sense Comparator

Parameter

Test Conditions

Min.

Typ.

Max.

Units

DC Output Voltage

3.135

+3.465

V

AC transient

1mA to full load

3%

of DC Out.

Volt. (3)

Vilimit (1)

0.24

0.3

0.36

V

Foldback Current Limit Ratio (2)

Output Shorted to Ground

3:1

Ratio

(1) Vilimit is the voltage at which current limit begins to occur, as seen across Rcl (see block diagram) as measured by the UV detection oc-

curing.

(2) Foldback current limit prevents excessive power dissipation in the pass element under short circuit conditions. The ratio is the current

flowing at current limit when the pass element under short circuit conditions. The ratio is the current flowing at current limit when the pass

element is delivering full voltage (when UV first occurs), over the current in the pass element when the output is shorted to ground.

(3) DC and AC transient requirements may be mixed, as long as the total deviation from 3.3V does not exceed Dvreg as specified under the

critical specifications in section 6 of this specification.

DRIVER OUTPUT

Parameter

Test Conditions

Min.

Typ.

Max.

Units

Output Current

0.5

mA

Output High Voltage

I = -0.1mA, V = 5V

Vdd-2

V

Output Impedance

25°C

50

Ω

L6256

24/28