TL594

PULSEWIDTHMODULATION CONTROL CIRCUIT

SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003

5

POST OFFICE BOX 655303

(unless otherwise noted)

reference section

PARAMETER

TEST CONDITIONS†

TL594C, TL594I

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

UNIT

Output voltage (REF)

IO = 1 mA,

TA = 25°C

4.95

5

5.05

V

Input regulation

VCC = 7 V to 40 V,

TA = 25°C

2

25

mV

Output regulation

IO = 1 to 10 mA,

TA = 25°C

14

35

mV

Output-voltage change with temperature

∆TA = MIN to MAX

2

10

mV/V

Short-circuit output current§

Vref = 0

10

35

50

mA

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.

§ Duration of the short circuit should not exceed one second.

amplifier section (see Figure 1)

PARAMETER

TEST CONDITIONS

TL594C, TL594I

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

Input offset voltage, error amplifier

FEEDBACK = 2.5 V

2

10

mV

Input offset current

FEEDBACK = 2.5 V

25

250

nA

Input bias current

FEEDBACK = 2.5 V

0.2

1

µA

Common-mode input voltage range,

error amplifier

VCC = 7 V to 40 V

0.3

to

VCC−2

V

Open-loop voltage amplification, error

amplifier

∆VO = 3 V,

RL = 2 kΩ,

VO = 0.5 V to 3.5 V

70

95

dB

Unity-gain bandwidth

VO = 0.5 V to 3.5 V,

RL = 2 kΩ

800

kHz

Common-mode rejection ratio, error

amplifier

VCC = 40 V,

TA = 25°C

65

80

dB

Output sink current, FEEDBACK

VID = −15 mV to −5 V,

FEEDBACK = 0.5 V

0.3

0.7

mA

Output source current, FEEDBACK

VID = 15 mV to 5 V,

FEEDBACK = 3.5 V

−2

mA

‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.

PARAMETER

TEST CONDITIONS†

TL594C, TL594I

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

UNIT

Frequency

10

kHz

Standard deviation of frequency¶

All values of VCC, CT, RT, and TA constant

100

Hz/kHz

Frequency change with voltage

VCC = 7 V to 40 V,

TA = 25°C

1

Hz/kHz

Frequency change with temperature#

∆TA = MIN to MAX

50

Hz/kHz

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.

¶ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:

s +

N

n

+1

(xn * X)

2

N

* 1

# Temperature coefficient of timing capacitor and timing resistor is not taken into account.