TPS2500, TPS2501

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SLVS886C – OCTOBER 2008 – REVISED AUGUST 2010

ADDITIONAL DESIGN EXAMPLE

Specific Application Examples

The Table 4 outlines several specific applications and component recommendations for the given electrical

specifications.

Table 4. Component Recommendations

Application Example

Electrical Specifications

Component Values

# of

AUX

VIN min

VIN max

IAUX max IUSB max

ITOTAL

Inductor

CIN

CAUX

CUSB

Description

USB

Load

RILIM (kΩ)

(V)

(V)

(mA)

(mA)

(mA)

(mH)

(mF)(1)

(mF)(1)

(mF)(2)

Ports

(mA)

Single-cell

lithium ion

1

100

2.7

4.2

100

550

650

3.3

10

22

150

30.9

battery or

3.3-V bus

Single-cell

lithium ion

2

0

2.7

4.2

0

1100

1100

2.2

10

22

150

18.2

battery or

3.3-V bus

Two-cell NiMH

1

0

1.8

2.4

0

550

550

2.2

10

22

150

35.7

battery

Single-cell

lithium ion

2

0

2.7

5.25

0

1100

1100

2.2

10

22

150

18.2

battery ORed

with 5-V bus

Single-cell

lithium ion

1

200

2.7

5.25

200

550

750

3.3

10

22

150

26.1

battery ORed

with 5-V bus

(1)

Use low-ESR, X5R or X7R ceramic capacitors.

(2)

Not required for operation, only required to meet USB 2.0 standard

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