iC-DC

2-CHANNEL BUCK/BOOST DC/DC CONVERTER

Rev B1, Page 7/19

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.

Total Device

001 VB

Permissible Supply Voltage

4

36

V

002 I()

Supply Current in VB

ENV1 = lo, ENV2 = lo, standby

20

100

400

µA

003 I()

Supply Current in VB

only one Linear Regulator active,

no load current, no external voltage divider

VB = 24 V

1.5

3

8

mA

VB = 12 V

2.5

5.5

15

mA

VB = 4 V

10

22

60

mA

004 I()

Supply Current in VB

both Linear Regulators active, no load current,

no external voltage divider

VB = 24 V

2

4

10

mA

VB = 12 V

3

7

20

mA

VB = 4 V

12

25

70

mA

007 Ipd()

Pull-Down Current in ENV1,

ENV2

V() = 2...36 V

15

150

µA

009 Vt()hi

Input Threshold Voltage hi at

ENV1, ENV2

2

V

010 Vt()lo

Input Threshold Voltage lo at

ENV1, ENV2

0.8

V

011 Vt()hys

Input Hysteresis at ENV1, ENV2 Vt()hys = Vt()hi − Vt()lo

100

200

400

mV

012 Vc()lo

Clamp Voltage lo at all pins with

exception of VB

versus GND, I() = -10 mA

-1.4

-0.3

V

013 Vc()lo

Clamp Voltage lo at VB

versus GND, I() = -5 mA

-60

-38.5

V

014 Vc()hi

Clamp Voltage hi at VB VBR,

VBL, ENV1, ENV2

versus GND, I() = 2 mA

42

60

V

015 Vc()hi

Clamp Voltage hi at VBROK,

NAUT, TOK, TEST

versus GND, I() = 1 mA

9

18

V

016 Vc()hi

Clamp Voltage hi at VH

versus GND, I() = 5 mA

8.3

18

V

017 Vc()hi

Clamp Voltage hi at VH1, VH2

versus GND, I() = 10 mA

6.2

18

V

018 Vc()hi

Clamp Voltage hi at VCC1,

VCC2, POE1, POE2, CFG1,

CFG2

versus GND, I() = 10 mA

5.6

18

V

019 Vc()hi

Clamp Voltage hi at GNDA,

RREF

versus GND, I() = 10 mA

2.5

18

V

020 Vc()hi

Clamp Voltage hi at V1OK, V2OK V1OK versus VCC1, V2OK versus VCC2,

I() = 2 mA

0.3

1.4

V

021 Vc()hi

Clamp Voltage hi at VHL

versus VH, I() = 10 mA

0.3

1.4

V

Reverse Polarity Protection VB, VBR and Autarky Detection NAUT

101 Vs()hi

Saturation Voltage hi at VBR

Vs(VBR)hi = VB − V(VBR), I(VBR) = -100 mA

0.3

0.7

V

103 Izu()

Maximum Permissible Current hi

from VBR at Startup

V(VBR) = 0...3 V, VB increasing

-5

0

mA

104 Imax()

Maximum Current from VBR

V(VBR) = 2 V...VB − 0.6 V

-600

-80

mA

105 Imax()

Maximum Current from VBR

V(VBR) = 0 V

-250

-10

mA

108 Ir()

Leakage Current from VB at

Autarky

VBR > VB + 50 mV

-0.5

0

mA

109 d(VB,VBR) Voltage Difference for Autarky

VBR versus VB; NAUT = lo

25

12.5

0

mV

110 Ir,max()

Maximum Current from VB

VB < VBR < VB + 50 mV

-10

-4

0

mA

111

Ir()

Reverse Current from VB

-36V < VB < GND

-1

0

mA

112 Vs()lo

Saturation Voltage lo at NAUT

I(NAUT) = 5 mA, NAUT = lo

0.4

V

113 Isc()lo

Short-Circuit Current lo in NAUT V(NAUT) = 2...8 V, NAUT = lo

10

20

mA

114 Ilk()

Leakage Current in NAUT

V(NAUT) = 0...8 V, NAUT = hi

-10

10

µA

Voltage Monitoring VBR and Error Detection VBROK

201 Vt1()hi

Lower Turn-on Threshold VBR

VBR increasing, VBROK: lo → open

3.75

3.95

V

202 Vt1()lo

Lower Turn-off Threshold VBR

VBR decreasing, VBROK: open → lo

2.8

3.15

V