iC-DC

2-CHANNEL BUCK/BOOST DC/DC CONVERTER

Rev B1, Page 10/19

ELECTRICAL CHARACTERISTICS

Operating conditions: VB = +4 V to +36 V, RREF = 20 kΩ ±1 %, Tj = -40°C to +125°C, reference is GND (GNDA = GND),

unless otherwise stated.

Item

Symbol

Parameter

Conditions

Unit

No.

Min.

Typ.

Max.

Voltage Monitoring V1OK, V2OK (x = 1, 2)

701 VtU()lo

Lower Undervoltage Threshold

VCCx for VxOK = lo

versus VCCxnom

90

92

94

%VCC2

702 VtU()hi

Upper Undervoltage Threshold

VCCx for VxOK = hi

versus VCCxnom

91

93

95

%VCC2

703 VtO()lo

Lower Overvoltage Threshold

VCCx for VxOK = hi

versus VCCxnom

105

107

109

%VCC2

704 VtO()hi

Upper Overvoltage Threshold

VCCx for VxOK = lo

versus VCCxnom

106

108

110

%VCC2

705 Vt()hys

Hysteresis Under-/Overvoltage

VCCx

versus VCCxnom

0.25

1

1.5

%VCC2

706 Vs()lo

Saturation Voltage lo

VxOK = lo;

I() = 4 mA, VCCx ≥ 3 V

0.4

V

I() = 1 mA, VCCx < 3 V

0.4

V

707 Vs()hi

Saturation Voltage hi

Vs()hi = VCCx − V(), VxOK = hi;

I() = -4 mA, VCC2 ≥ 3 V

0.4

V

I() = -1 mA, VCC2 < 3 V

0.4

V

708 Isc()lo

Short-Circuit Current lo

V() = VCCx, VxOK = lo;

VCCx ≥ 3 V

6

90

mA

VCCx < 3 V

1

30

mA

709 Isc()hi

Short-Circuit Current hi

V() = 0 V, VxOK = hi;

VCCx ≥ 3 V

-100

-6

mA

VCCx < 3 V

-30

-1

mA

Supply Switches POE1, POE2 (x = 1, 2)

801 Vs()hi

Saturation Voltage hi

Vs()hi = VCCx − V(POEx);

V(VCCx) ≥ 2.5 V, I(POEx) = -10 mA,

V1OK, V2OK = hi

0.2

V

802 Vs()hi

Saturation Voltage hi

Vs()hi = VCCx − V(POEx);

V(VCCx) < 2.5 V; I(POEx) = -5 mA,

V1OK, V2OK = hi

0.2

V

803 Isc()hi

Short-Circuit Current hi

V(POEx) = 0 V; V(VCCx) ≥ 2.5 V,

POEx = hi, V1OK, V2OK = hi

-40

-12

mA

804 Isc()hi

Short-Circuit Current hi

V(POEx) = 0 V; V(VCCx) < 2.5 V,

POEx = hi, V1OK, V2OK = hi

-30

-6

mA

Thermal Shutdown and Error Detection TOK

901 Toff

Thermal Shutdown Threshold

150

160

175

°C

902 Ton

Restart Temperature

135

150

165

°C

903 Thys

Temperature Hysteresis

Thys = Toff − Ton

5

10

20

°C

904 Vs()lo

Saturation Voltage lo

I(TOK) = 5 mA; TOK = lo

0.4

V

905 Isc()lo

Short-Circuit Current lo

V(TOK) = 2..8 V; TOK = lo

10

20

mA

906 lk()

Leakage Current

V(TOK) = 0..8 V; TOK = hi

-10

10

µA

Test Input TEST

A01 Vt()hi

Threshold Voltage hi for Com-

parator test

0.65

0.75

V

A02 Vt()lo

Threshold Voltage lo for Com-

parator test

0.5

0.6

V

A03 Vt()hys

Hysteresis at TEST

Vt() = Vt(TEST)hi − Vt(TEST)lo

10

50

100

mV

A05 Ipd()

Pull-Down Current in TEST

V() = 5.5 V

20

200

µA

A07 tsu(TEST) Settling Time at V1OK, V2OK

V1OK, V2OK changing hi → lo

10

20

30

µs

A08 tsu(TEST) Settling Time at V1OK, V2OK

V1OK, V2OK changing of lo → hi

2

4

8

µs