TCV7108FN datasheet(4/16 Pages) TOSHIBA

4 / 16 page

TCV7108FN

2011-10-03

Electrical Characteristics (Tj  25°C, VIN1  VIN2  2.7 to 5.6 V, unless otherwise specified)

Characteristics

Symbol

Test Condition

Min

Typ.

Max

Unit

Operating input voltage

VIN (OPR)



2.7



5.6

Operating current

IIN

VIN1  VIN2  VEN  VFB  5 V



450

680

A

Output voltage range

VOUT (OPR) VEN  VIN1  VIN2

0.8



IIN (STBY) 1

VIN1  VIN2  5 V, VEN  0 V

VFB  0.8 V



Standby current

IIN (STBY) 2

VIN1  VIN2  3.3 V, VEN  0 V

VFB  0.8 V



A

High-side switch leakage current

ILEAK (H)

VIN1  VIN2  5 V, VEN  0 V

VFB  0.8 V, VLX  0 V



A

VIH (EN) 1

VIN1  VIN2  5 V

1.5



VIH (EN) 2

VIN1  VIN2  3.3 V

1.5



VIL (EN) 1

VIN1  VIN2  5 V



0.5

EN threshold voltage

VIL (EN) 2

VIN1  VIN2  3.3 V



0.5

IIH (EN) 1

VIN1  VIN2  5 V, VEN  5 V



EN input current

IIH (EN) 2

VIN1  VIN2  3.3 V, VEN  3.3 V



A

VFB1

VIN  5 V, VEN  5 V, Tj = 0 to 85℃

0.792

0.8

0.808

VFB input voltage

VFB2

VIN  3.3 V, VEN  3.3 V, Tj = 0 to 85℃

0.792

0.8

0.808

VFB input current

IFB

VIN1  VIN2  2.7 to 5.6 V

VFB  VIN2

1



A

RDS(ON)(H)1

VIN1 = VIN2 = 5V , VEN = 5 V

ILX = - 1A



0.18



RDS(ON)(H)2

VIN1 = VIN2 = 3.3 V , VEN = 3.3V

ILX = - 1 A



0.21



RDS(ON)(H)3

VIN1 = VIN2 = 5 V , VEN = 5V

ILX = - 0.1 A , Tj=-40 to 85℃





0.25



High-side switch on-state resistance

RDS(ON)(H)4

VIN1 = VIN2 = 3.3 V , VEN = 3.3V

ILX = - 0.1 A , Tj=-40 to 85℃



0.3



RDS (ON) (L) 1

VIN1  VIN2  5 V, VEN  5 V

ILX  1 A



0.12



RDS (ON) (L) 2

VIN1  VIN2  3.3 V, VEN  3.3 V

ILX  1 A



0.14



RDS (ON) (L) 3

VIN1 = VIN2 = 5 V , VEN = 5V

ILX = 0.1 A , Tj=-40 to 85℃



0.18

Low-side switch on-state resistance

RDS (ON) (L) 4

VIN1 = VIN2 = 3.3 V , VEN = 3.3V

ILX = 0.1 A , Tj=-40 to 85℃



0.2



Oscillation frequency

fOSC

VIN1  VIN2  VEN  5 V

1200

1500

1800

kHz

Internal soft-start time

tSS

VIN1  VIN2  5 V, IOUT  0 A, Measured

between 0% and 90% points at VOUT.

0.25

0.45

0.65

External soft-start charge current

ISS

VIN1  VIN2  5 V, VEN  5 V

5

8

13

A

High-side switch duty cycle

Dmax

VIN1  VIN2  2.7 to 5.6 V



100

Detection

temperature

TSD

VIN1  VIN2  5 V



150



Thermal

shutdown (TSD)

Hysteresis

TSD

VIN1  VIN2  5 V



°C

Detection voltage

VUV

VEN  VIN1  VIN2

2.3

2.45

2.6

Recovery voltage

VUVR

VEN  VIN1  VIN2

2.4

2.55

2.7

Undervoltage

lockout (UVLO)

Hysteresis

VUV

VEN  VIN1  VIN2



0.1



ILIM1

VIN1 = VIN2 = 4.3 V, VOUT = 2 V

2.7

3.3



LX current limit

ILIM2

VIN1 = VIN2 = 3.3 V, VOUT = 2 V

2.3

2.9



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