SEA05L

Operation

Doc ID 18462 Rev 1

5/12

Table 5.

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Device supply

Voltage operating range

3.5

36

V

Quiescent current

(Ictrl = Vsense = 0, OUT = open)

250

500

µA

Voltage control loop op-amp

13.5

S

Vctrl

2.488

2.5

2.512

V

Ibias

Inverting input bias current

25

nA

Current control loop

1.5

7

S

48

50

52

mV

Ibias

Non-inverting input source current

6

µA

Output stage

200

400

mV

LED driver

LED driver sink current capability (peak)

10

mA

LED driver current modulation frequency

0.6

1

1.4

kHz

Low output level at 5 mA sink current

(internal mosfet on)

450

900

mV

LED driver leakage current

(internal mosfet off)

0.5

µA

1.

If the voltage on Vctrl (the negative input of the amplifier) is higher than the positive amplifier input, and it is increased by

1mV, the sinking current at the output OUT will be increased by 3.5 mA.

2.

The internal voltage reference is set at 2.5 V. The voltage control loop precision takes into account the cumulative effects of

the internal voltage reference deviation as well as the input offset voltage of the transconductance operational amplifier.

The internal voltage reference is fixed by bandgap, and trimmed to 0.48 % accuracy at room temperature.

3.

When the inverting input at Isense is greater than 50 mV, and the voltage is increased by 1 mV, the sinking current at the

output Out will be increased by 7 mA.

4.

The internal current sense threshold is triggered when the voltage on pin Isense is 50 mV. The current control loop

precision takes into account the cumulative effects of the internal voltage reference deviation as well as the input offset

voltage of the transconductance operational amplifier.