CY8C54LP datasheet(67/117 Pages) CYPRESS

67 / 117 page

PRELIMINARY

PSoC® 5LP: CY8C54LP Family

Datasheet

Document Number: 001-84934 Rev. **

Page 67 of 117

11.3.3 Inductive Boost Regulator

Table 11-6. Inductive Boost Regulator DC Specifications

Unless otherwise specified, operating conditions are: LBOOST = 10 μH, CBOOST = 22 μF || 0.1 μF, 2 < VBAT:VOUT

≤ 4.

Parameter

Description

Conditions

Min

Typ

Max

Units

VBAT

Input voltage, includes

startup voltage[22]

IOUT < 7.5 mA, VOUT = 1.8 V nominal

0.5

–

0.6

External diode required if VBAT < 0.9 V

0.6

–

3.6

IOUT

Load current, steady

state[22, 23]

VBAT = 1.6 – 3.6 V, VOUT = 1.6 – 3.6 V

–

VBAT = 1.6 – 3.6 V, VOUT = 3.6 – 5.0 V, external

diode

––

VBAT = 0.5 – 1.6 V, VOUT = 1.6 – 3.6 V

–

VBAT = 0.5 – 1.6 V, VOUT = 3.6 – 5.0 V, external

diode

––

ILPK

Inductor peak current

–

700

Quiescent current

Boost active mode

–

250

–

µA

Boost sleep mode, IOUT < 1 µA

–

µA

VOUT

Boost output

voltage[24]

1.8 V nominal

1.71

1.8

1.89

1.9 V nominal

1.81

1.90

2.00

2.0 V nominal

1.90

2.00

2.10

2.4 V nominal

2.28

2.40

2.52

2.7 V nominal

2.57

2.70

2.84

3.0 V nominal

2.85

3.00

3.15

3.3 V nominal

3.14

3.30

3.47

3.6 V nominal, External diode required

3.42

3.60

3.78

5.0 V nominal, External diode required

4.75

5.00

5.25

VOUT : VBAT

Ratio of VOUT to VBAT

––

ratio

RegLOAD

Load regulation

–

RegLINE

Line regulation

–

Notes

22. For Vbat

≤ 0.9 V or Vout ≥ 3.6 V, an external diode is required.

23. If powering the PSoC from boost with Vbat = 0.5 V, the IMO must be 3 MHz at startup.

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

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