ELECTRICAL CHARACTERISTICS (All the following parameters are specified @ 27

°C and V512 =

12V, unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Main power supply

4.5

13.2

V

HVP

(1)

Output positive Voltage

Double Supply Voltage

25

40

V

≥ 8

≤ 8

30

25

80

40

V

V

HVM

Output negative voltage

-40

-25

V

HVripple

HVP, HVM ripple

External filter cap. 100nF

Bang-Bang Mode

Linear Mode

2.5

0.8

V

V

DC-DC gain

Ratio of HVP and DC-DC ref.

voltage PIN15

19

20

21

I, hvp

Output current (see figure 1a)

I, hvm

Time to operating condition

5

ms

(2)

Switching Frequency

80

550

kHz

Boost transistor ON resistance

4

Ω

Boost transistor current limiting

700

mA

CP-slope

Charge Pump Slope

150

V/

µs

Total current in sleep mode

1

mA

Reference voltage at PIN13

2.4

2.5

2.6

V

Reference voltage output

current

-1

1

mA

Filter capacitor at PIN13

10

100

nF

Resistor at PIN14 for precise

internal current (100

µA)

25

k

Ω

Minimum OpAmp supply

Voltage (HVP if externally

given)

Double Supply

V512

+4

V

Single Supply

V512

+4

V

DC gain

OpAmp DC gain

130

dB

GBW

OpAmp Gain Bandwidth

product

Cload 0.4nF to 24nF

Double Supply Voltage

500

KHz

DCinp

OpAmp Input dynamic voltage

Double supply

-5

5

V

Single supply

1.2

10

V

DC-DC

OFF

DC-DC Converter switched-off

when DC

than

0.6

V

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V512

Supply voltage pin 20 referred to Ground

14

V

HVP

Positive high voltage referred to HVM

84

V

HVM

Negative high voltage referred to Ground

-42

V

IN A&B

Amplifier input voltage common mode

±6V

Level shifts input voltage

-0.5 to +5.5

V

Operative Ambient Temperature

-20 to +80

°C

Storage Temperature

-40 to +125

°C

All the voltage value are referred to ground.

L6270 - L6271

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