SC33690DS datasheet(14/26 Pages) NXP

14 / 26 page

MC33690 Standalone Tag Reader Circuit, Rev. 5

Voltage Regulator

Freescale Semiconductor

Voltage Regulator

Typical values reflect average measurements at 6V

≤ V

SUP ≤ 16V, VSS = 0V, TJ = –40°C to +125°C, unless otherwise noted

Low-Voltage Reset

Typical values reflect average measurements at 6V

≤ V

SUP ≤ 16V, VSS = 0V, TJ = –40°C to +125°C, unless otherwise noted

Table 5. Supply Current Specifications

Parameter

Symbol

Test Conditions

and Comments

Min

Typ

Max

Unit

Type

Pin VSUP

9.1

Standby mode current

ISUP1

—

300

500

μA—

9.2

Operating mode current

ISUP2

Circuit in configuration C

No current sunk from VDD

Drivers TD1/2 switched off

Tx forced to low

—1.5

2.5

—

Table 6. Voltage Regulator Specifications

Parameter

Symbol

Test Conditions

and Comments

Min

Typ

Max

Unit

Type

Pins VSUP and VDD

1.1 Output Voltage (5.5V

≤ V

SUP ≤ 40V)

VVDD1

Without external MOS

transistor, IOUT ≤ 50mA

4.75

5.0

5.25

—

1.3 Total Output Current

IVDD1

——

—

1.5 Load Regulation

VLoadReg1

Without external MOS

transistor, 1 to 50mA IOUT

change

—20

—

1.9 Output Voltage (5.5V

≤ V

SUP ≤ 40V)

VVDD2

With external MOS transistor,

IOUT ≤ 150mA

The stability is ensured with a

decoupling capacitor between

VDD and VSS: COUT ≥ 10μF

with ESR

≤ 3Ω.

The current capability can be

increased up to 150mA by

using an external N channel

MOS transistor (see Figure 1).

The main characteristics for

choosing this component are

VT < 1.8V and BVDSS > 40V

4.7

5.0

5.3

—

1.11 Total Output Current

IVDD2

—

150

—

1.6 Load Regulation

VLoadReg2 With external MOS transistor,1

to 150mA IOUT change

—

150

—

1.4 Line Regulation (6V

≤ V

SUP ≤ 16V)

VLineReg

IOUT = 1mA

———

—

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