TPS5615, TPS5618, TPS5625, TPS5633

SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER

SLVS177A – SEPTEMBER 1998 – REVISED NOVEMBER 1998

11

POST OFFICE BOX 655303

electrical characteristics over recommended operating virtual junction temperature range,

bias regulator

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output voltage

11.4 V

≤ VCC ≤ 12.6 V, See Note 3

6

V

NOTE 3: The bias regulator is designed to provide a quiet bias supply for the TPS56xx controller. External loads should not be driven by the bias

regulator.

output drivers

PARAMETER (see Note 4)

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High-side sink

Duty cycle < 2%, tpw < 100 µs, TJ = 125°C,

VBOOT VBOOTLO 65 V

2

Peak output current

High-side source

VBOOT – VBOOTLO = 6.5 V,

VHIGHDR = 1.5 V (SRC) or 5 V (sink), See Note 2

2

A

Peak output current

Low-side sink

Duty cycle < 2%, tpw < 100 µs, TJ = 125°C,

VDRV 65 V VLOWDR 1 5 V (SRC) or 5 V

2

A

Low-side source

VDRV = 6.5 V, VLOWDR = 1.5 V (SRC) or 5 V

(sink), See Note 2

2

High-side sink

TJ = 125°C, VBOOT – VBOOTLO = 6.5 V,

3

Output resistance

High-side source

J

,

BOOT

BOOTLO

,

VHIGHDR = 1.5 V (SRC) or 5 V (sink)

45

Ω

Output resistance

Low-side sink

TJ = 125°C, VDRV = 6.5 V,

5.7

Ω

Low-side source

J

DRV

VLOWDR = 1.5 V (SRC) or 5 V (sink)

45

NOTES:

2. Ensured by design, not tested.

4. The pull up/down circuits of the drivers are bipolar and MOSFET transistors in parallel. The peak output current rating is the

combined current from the bipolar and MOSFET transistors. The output resistance is the RDS(ON) of the MOSFET transistor when

the voltage on the driver output is less than the saturation voltage of the bipolar transistor.

supply current

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VCC supply voltage range

11.4

12

13

V

VINHIBIT = 5 V,

VBOOTLO = 0 V,

VCC > 10.75 V at startup,

See Note 2

3

10

VCC quiescent current

VINHIBIT = 5 V,

VBOOTLO = 0 V,

CLOWDR = 50 pF,

VCC > 10.75 V at startup,

CHIGHDR = 50 pF,

fswx = 200 kHz

5

mA

VINHIBIT = 0 V or VCC < 9.25 V at startup,

VBOOT = 13 V,

VBOOTLO = 0 V

10

µA

High-side drive regulator quiescent current

VINHIBIT = 5 V,

VBOOT = 13 V,

CHIGHDR = 50 pF,

VCC > 10.75 V at startup,

VBOOTLO = 0 V,

fswx = 200 kHz

2

mA

NOTE 2: Ensured by design, not tested.