IC-DC 参数 Datasheet PDF下载

iC-DC

preliminar y

Rev A3, Page 7/19

2-CHANNEL BUCK/BOOST DC/DC CONVERTER

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

No.

001

002

003

Symbol

Parameter

Conditions

Min.

VB

I()

I()

Permissible Supply Voltage

Supply Current in VB

Supply Current in VB

ENV1 = lo, ENV2 = lo, standby

only one Linear Regulator active,

no load current, no external voltage divider

VB = 24 V

VB = 12 V

VB = 4 V

both Linear Regulators active, no load current,

no external voltage divider

VB = 24 V

VB = 12 V

VB = 4 V

V() = 2...36 V

4

20

100

Typ.

Max.

36

200

V

µA

Unit

Total Device

1.5

2.5

10

3

5.5

22

8

15

50

mA

mA

mA

004

I()

Supply Current in VB

2

3

12

15

4

7

25

10

20

60

150

2

mA

mA

mA

µA

V

V

007

009

010

011

012

013

014

015

016

017

018

Ipd()

Vt()hi

Vt()lo

Vt()hys

Vc()lo

Vc()lo

Vc()hi

Vc()hi

Vc()hi

Vc()hi

Vc()hi

Pull-Down Current in ENV1,

ENV2

Input Threshold Voltage hi at

ENV1, ENV2

Input Threshold Voltage lo at

ENV1, ENV2

0.8

100

-1.4

-60

42

9

8.3

6.2

5.6

200

400

-0.3

-42

60

18

18

18

18

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

−

Vt()lo

Clamp Voltage lo at all pins with

exception of VB

Clamp Voltage lo at VB

Clamp Voltage hi at VB VBR,

VBL, ENV1, ENV2

Clamp Voltage hi at VBROK,

NAUT, TOK, TEST

Clamp Voltage hi at VH

Clamp Voltage hi at VH1, VH2

Clamp Voltage hi at VCC1,

VCC2, POE1, POE2, CFG1,

CFG2

Clamp Voltage hi at GNDA,

RREF

versus GND, I() = -10 mA

versus GND, I() = -2 mA

versus GND, I() = 2 mA

versus GND, I() = 1 mA

versus GND, I() = 5 mA

versus GND, I() = 10 mA

versus GND, I() = 10 mA

mV

V

V

V

V

V

V

V

019

020

021

101

103

104

105

108

109

110

111

112

113

114

201

202

Vc()hi

Vc()hi

Vc()hi

Vs()hi

Izu()

Imax()

Imax()

Ir()

versus GND, I() = 10 mA

2.5

0.3

0.3

0.3

-5

-500

-150

-0.5

25

-10

-1

10

-10

3.75

2.8

3.15

12.5

-4

-250

18

1.4

1.4

0.6

0

-120

-10

0

0

0

0

0.4

20

10

3.95

V

V

V

V

mA

mA

mA

mA

mV

mA

mA

V

mA

µA

V

V

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

I() = 2 mA

Clamp Voltage hi at VHL

Saturation Voltage hi at VBR

versus VH, I() = 10 mA

Vs(VBR)hi = VB

−

V(VBR), I(VBR) = -100 mA

Reverse Polarity Protection VB, VBR and Autarky Detection NAUT

Maximum Permissible Current hi V(VBR) = 0...3 V, VB increasing

from VBR at Startup

Maximum Current from VBR

Maximum Current from VBR

Leakage Current from VB at

Autarky

Maximum Current from VB

Reverse Current from VB

Saturation Voltage lo at NAUT

Leakage Current in NAUT

Lower Turn-on Threshold VBR

Lower Turn-off Threshold VBR

V(VBR) = 2 V...VB

−

0.6 V

V(VBR) = 0 V

VBR > VB + 50 mV

VBR versus VB; NAUT = lo

VB < VBR < VB + 50 mV

-36V < VB < GND

I(NAUT) = 5 mA, NAUT = lo

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

VBR increasing, VBROK: lo

→

open

VBR decreasing, VBROK: open

→

lo

d(VB,VBR) Voltage Difference for Autarky

Ir,max()

Ir()

Vs()lo

Isc()lo

Ilk()

Vt1()hi

Vt1()lo

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

Voltage Monitoring VBR and Error Detection VBROK