KIT34844AEPEVBE Freescale Semiconductor, KIT34844AEPEVBE Datasheet - Page 34

• Manufacturer Part Number: KIT34844AEPEVBE
• Description: LED Lighting Development Kits IC, 10 CHANNEL LED BACKLIGHT
• Manufacturer: Freescale Semiconductor

Specifications of KIT34844AEPEVBE

• Supply Voltage: 12 V
• Supply Current: 2 uA
• For Use With/related Products: 34844A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 9. 34844A Pin Definitions
34
34844A
PIN CONNECTIONS
Pin Number
EP = Exposed Pad
A functional description of each pin can be found in the Functional Pin Description section beginning on
8 - 17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
Pin Name
A0/SEN
PGNDB
PGNDA
SLOPE
VDC3
PWM
SWB
SWA
FAIL
ISET
I0-I9
VIN
PIN
NIN
EN
CK
Pin Function
Input/Output
Open Drain
Passive
Passive
PGNDB
PGNDA
A0/SEN
Output
Power
Power
Power
Input
Input
Input
Input
Input
Input
Input
Input
SWB
SWA
VIN
EN
IO
1
2
3
4
5
6
7
8
Negative current scale Negative input analog current control
Positive current scale
Internal Regulator 3
32
I1
Fault detection
9
Power Ground
Switch node B
Switch node A
Power Ground
External PWM
Formal Name
Device Select
LED Channel
Input voltage
Figure 24. 34844A Pin Connections
Boost Slope
Clock signal
Current set
Enable
31
10
I2
PIN CONNECTIONS
30
11
I3
TRANSPARENT
5MM X 5MM
TOP VIEW
QFN - EP
32 LEAD
29
EP GND
12
I4
Input supply
Power ground
Boost switch connection B
Boost switch connection A
Power ground
Address select, device select pin or OVP HW control
Enable pin (active high, internal pull-up)
LED string connections
Fault detected pin (open drain):
LED current setting resistor
Positive input analog current control
Boost slope compensation Setting resistor
Decoupling capacitor for internal phase locked loop power
Clock synchronization pin (input for M/~S = low - internal pull-up, output
for M/~S = high)
External PWM input (internal pull-down)
28
13
I5
No Failure = Low-impedance
Failure = High-impedance
27
14
I6
26
15
I7
25
16
I8
24
23
22
21
20
19
18
17
Analog Integrated Circuit Device Data
CK
VDC3
SLOPE
NIN
PIN
ISET
FAIL
I9
Definition
Freescale Semiconductor
page
42.