Cypress CY8C24423 Manual De Usuario

Document Number: 38-12011  Rev. *G

Page 22 of 43

The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C 

≤ T

A

 

≤ 85°C, or 3.0V to 3.6V and -40°C ≤ T

A

 

≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and

are for design guidance only or unless otherwise specified.

V

PUMP 

5V

5V Output voltage

4.75

5.0

5.25

V

Average, neglecting ripple

V

PUMP 

3V

3V Output voltage

3.00

3.25

3.60

V

Average, neglecting ripple

I

PUMP

Available Output Current
V

BAT 

= 1.5V, V

PUMP

 = 3.25V

V

BAT 

= 1.8V, V

PUMP

 = 5.0V

8
5

–
–

–
–

mA
mA

For implementation, which 
includes 2 uH inductor, 1 uF cap, 
and Schottky diode

V

BAT

5V

Input Voltage Range from Battery

1.8

–

5.0

V

V

BAT

3V

Input Voltage Range from Battery

1.0

–

3.3

V

V

BATSTART

Minimum Input Voltage from Battery to 
Start Pump

1.1

–

–

V

ΔV

PUMP_Line

Line Regulation (over V

BAT

 range)

–

5

–

%V

O

a

a. V

O

 is the “Vdd Value for PUMP Trip” specified by the VM[2:0] setting in the DC POR and LVD Specification, 

 on page 25.

ΔV

PUMP_Load

Load Regulation

–

5

–

%V

O

a

ΔV

PUMP_Ripple

Output Voltage Ripple (depends on 
cap/load)

–

25

–

mVpp

Configuration of note 2, load is 
5mA

–

Efficiency

35

50

–

%

Configuration of note 2, load is 
5mA, Vout is 3.25V.

F

PUMP

Switching Frequency

–

1.3

–

MHz

DC

PUMP

Switching Duty Cycle

–

50

–

%

Battery

C1

D1

+

Vdd

Vss

SMP

V

BAT