CY8C53_11 datasheet(62/106 Pages) CYPRESS

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PRELIMINARY

PSoC® 5: CY8C53 Family Datasheet

Document Number: 001-66237 Rev. *A

Page 62 of 106

11.3.3 Inductive Boost Regulator.

Table 11-6. Inductive Boost Regulator DC Specifications

Unless otherwise specified, operating conditions are: VBAT = 2.4 V, VOUT = 3.3 V, IOUT = 40 mA, FSW = 400 kHz, LBOOST = 10 µH,

CBOOST = 22 µF || 0.1 µF

Parameter

Description

Conditions

Min

Typ

Max

Units

VBAT

Input voltage

Includes startup

1.8

–

3.6

IOUT

Load current[15, 16]

VBAT = 1.8 – 3.6 V, VOUT = 3.6 – 5.0 V,

external diode

––

VBAT = 1.8 – 3.6 V, VOUT = 2.7 – 3.6 V,

internal diode

––

ILPK

Inductor peak current

–

700

Quiescent current

Boost active mode

–

200

–

µA

Boost standby mode, 32 khz external crystal

oscillator, IOUT < 1 µA

–12

–

µA

VOUT

Boost voltage range[17, 18]

3.0 V

2.85

3.00

3.15

3.3 V

3.14

3.30

3.47

3.6 V

3.42

3.60

3.78

5.0 V

External diode required

4.75

5.00

5.25

RegLOAD

Load regulation

–

3.8

RegLINE

Line regulation

–

4.1

Efficiency

LBOOST = 10 µH

–

LBOOST = 22 µH

–

Notes

15. For output voltages above 3.6 V, an external diode is required.

16. Maximum output current applies for output voltages

≤ 4x input voltage.

17. Based on device characterization (Not production tested).

18. At boost frequency of 2 MHz, VOUT is limited to 2 x VBAT. At 400 kHz, VOUT is limited to 4 x VBAT.

Table 11-7. Inductive Boost Regulator AC Specifications

Unless otherwise specified, operating conditions are: VBAT = 2.4 V, VOUT = 3.3 V, IOUT = 40 mA, FSW = 400 kHz, LBOOST = 10 µH,

CBOOST = 22 µF || 0.1 µF.

Parameter

Description

Conditions

Min

Typ

Max

Units

VRIPPLE

Ripple voltage

(peak-to-peak)

FSW = 400 kHz, IOUT = 10 mA

–

100

FSW

Switching frequency

–

0.1, 0.4,

or 2

–

MHz

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