LTC3207EUF#PBF Linear Technology, LTC3207EUF#PBF Datasheet - Page 7

• Manufacturer Part Number: LTC3207EUF#PBF
• Description: IC LED DRIVR QVGA DISPLAY 24-QFN
• Manufacturer: Linear Technology
• Type: QVGA Display (I²C Interface)r

Specifications of LTC3207EUF#PBF

• Topology: Step-Up (Boost), Switched Capacitor (Charge Pump)
• Number Of Outputs: 13
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: RGB, White LED
• Frequency: *
• Voltage - Supply: 2.9 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Operating Temperature: -40°C ~ 85°C
• Internal Switch(s): Yes
• Efficiency: 91%
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: QFN EP
• Pin Count: 24
• Mounting: Surface Mount
• Operating Supply Voltage (min): 2.9V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Compliant

PIN FUNCTIONS
CAMHL (Pin 8): Selects CAM high register when asserted
high and CAM low register when low. The high to low
transition automatically resets the charge pump mode to
1x. The logic level for CAMHL is referenced to DV
unused, the pin should be connected to ground.
DV
pin sets the logic reference level of the device. DV
reset the data registers when set below the undervoltage
lockout threshold which is the recommended method for
resetting the part after power up. A 0.1µF X5R or X7R
ceramic capacitor should be connected to ground.
SCL (Pin 10): I
referenced to DV
SDA (Pin 11): Input Data for the Serial Port. Serial data
is shifted in one bit per clock to control the device. The
logic-level is referenced to DV
C1P , C2P , C1M, C2M (Pin 24, 23, 20, 19): Charge Pump
Flying Capacitor Pins. A 2.2µF X7R or X5R ceramic ca-
BLOCK DIAGRAM
CC
(Pin 9): Supply Voltage for All Digital I/O Lines. This
2
C Clock Input. The logic-level for SCL is
CC
.
21
22
11
10
9
8
V
DV
ENU
CAMHL
SDA
SCL
BAT
CC
CC
.
–
+
+
–
1.22V
SHIFT REGISTER
MASTER/SLAVE
OSCILLATOR
CC
CONTROL
CC
850kHz
LOGIC
REG
will
. If
CAM
7
pacitor should be connected from C1P to C1M and C2P
to C2M.
V
pin must be bypassed with a single 2.2µF low ESR ceramic
capacitor.
ENU (Pin 22): Input. Used to enable or disable the prese-
lected ULED outputs. When the pin is toggled from low
(disable) to high (enable), the device illuminates the prese-
lected LEDs. When ENU is controlling selected outputs and
other outputs have been enabled the charge pump mode
will be reset to 1x on the falling edge of ENU. When ENU
is controlling selected outputs and no other outputs are
active the part will go from enabled to shutdown. The ENU
logic-level is referenced to DV
ground if unused.
Exposed Pad (Pin 25): Ground. The Exposed Pad must
be soldered to PCB ground.
ULED12
BAT
19
C2M
18
(Pin 21): Supply Voltage for the Entire Device. This
CHARGE PUMP
ULED11
20
CURRENT SOURCES
C1M
CAM CURRENT
SAFETY TIMER
12 UNIVERSAL
2 SECOND
AND DACS
SOURCE
17
23
ULED10
C2P
16
24
LTC3207/LTC3207-1
C1P
ULED9
12
15
ULED1
ULED2
ULED3
ULED4
ULED5
ULED6
ULED7
ULED8
GND
CPO
CC
3207 BD
25
12
13
14
1
2
3
4
5
6
. This pin is connected to
3207fc
7