IDTP9122

Advanced Datasheet

March 12, 2014

3

© 2014 Integrated Device Technology, Inc.

Table 3- Package Thermal Resistivity

SYMBOL

DESCRIPTION

CONDITIONS

Value

Units

Thermal Resistance (QFN-24)

Junction to Ambient

40

C/W

Thermal Characterization Parameter (QFN-24)

Junction to Board

23

C/W

Maximum Package Power Dissipation

1

W

ESD Rating

(HBM) Human Body Model (all pins except 20, 21)

2000V

(HBM) Human Body Model (only pins 20, 21)

 500V

(CDM) Charged Device Model (all pins)

 500V

Per JEDEC spec, the QFN-24 package is rated at MSL3. This thermal rating was calculated based on a JEDEC standard 4-layer board with dimensions 3in x 4.5in in still air

conditions. Actual thermal resistance will be affected by PCB size, solder joint quality, PCB layer count, copper thickness, air flow, altitude, and other unlisted variables. For

the QFN-24 package, the 2.8mm X 2.8mm EP is connected to ground plane with a matrix of 3x3 PCB thermal VIAs plated through from Top to Bottom layers. Actual thermal

resistance will be affected by PCB size, solder joint quality, PCB layer count, copper thickness, air flow, altitude, and other unlisted variables.

ELECTRICAL CHARACTERISTICS

Table 4 – General Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Input voltage range

2.7

5.5

V

UVLO threshold, VIN rising

VINSEL>1V, Buck2 in Switch

(3.3V) Mode

2.95

3

3.05

V

UVLO threshold, VIN falling

2.65

2.7

2.75

V

UVLO threshold, VIN rising

VINSEL=0V, Buck2 in Buck (5V) Mode

4.35

4.4

4.45

V

UVLO threshold, VIN falling

3.95

4.0

4.05

V

VIN quiescent current

Device in sleep mode

<1

μA

Device in active mode, all Bucks = OFF

100

μA

Low Level Input Voltage

All inputs

0.65

0.85

V

High Level Input Voltage

All inputs

1.25

1.45

V

Pull Down Current

GPIO14,15,17, and GPI3

1

μA

Pull Up Current

DEVSLPIN @ VIN=5V

5

8

10

μA

Selectable Pull Up Resistor

Optional for GPIO14,15,16,17 and GPI3

50

kΩ

Thermal Shutdown

135

°C

PG Detection Threshold

% of selected output voltage in Buck

Mode, % of

10

%

Max Drive Output

4

mA

12

mA

Reference Voltage Output

Voltage

V

0.1

μF

Reference Voltage Output

Current

1.0

mA