lm27965sqx-m National Semiconductor Corporation, lm27965sqx-m Datasheet - Page 3

• Manufacturer Part Number: lm27965sqx-m
• Description: Dual Display White Led Driver With I2c Compatible Brightness Control
• Manufacturer: National Semiconductor Corporation

I
I
R
V
V
I
I
V
I
I
f
t
f
Dxx
Dxx-MATCH
Q
SD
DxA-B-C /
SET
SW
START
PWM
Symbol
DxTH
HR
SET
OUT
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
otherwise specified: V
Fullscale Current; ENA, ENB, ENC, EN5A, EN3B Bits = “1”; C1 = C2 = C
(s) and current setting pins (I
V
SCL, SDIO, VIO,
RESET pin voltages
I
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature
(Soldering)
ESD Rating(Note 5)
Human Body Model
Dxx
IN
pin voltage
Pin Voltages
Output Current Regulation
BankA or BankB Enabled
Output Current Regulation
BankC Enabled
Maximum Diode Current per Dxx
Output(Note 10)
Output Current Regulation
BankA, BankB, and BankC Enabled
(Note 10)
LED Current Matching(Note 11)
Open-Loop Charge Pump Output
Resistance
V
Threshold
Current sink Headroom Voltage
Requirement
(Note 12)
Quiescent Supply Current
Shutdown Supply Current
I
Output Current to Current Set Ratio
BankA, BankB, BankC
Switching Frequency
Start-up Time
Internal Diode Current PWM
Frequency
SET
Dxx
Pin Voltage
1x to 3/2x Gain Transition
IN
Parameter
= 3.6V; V
J-MAX
Dxx
)
and I
RESET
J
SET
= 25°C, and limits in boldface type apply over the full operating temperature range. Unless
-0.3V to (V
= V
-0.3V to (V
) apply to BankA and BankB. (Note 9)
Internally Limited
-65ºC to +150º C
IN
; VIO = 1.8V V
(Notes 2, 8)
-0.3V to 6.0V
w/ 6.0V max
w/ 6.0V max
(Notes 1, 2)
3.0V
ENA = '1' or ENB = '1' and ENC= '0'
3.0V
ENC = '1' and ENA = ENB= '0'
R
3.2V
V
3.0V
Gain = 3/2
Gain = 1
V
R
I
(I
R
Gain = 1.5x, No Load
All ENx bits = "0"
2.7V
P
POUT
Dxx
Dxx
LED
DxA
OUT
SET
SET
SET
IN
(Note 4)
= 95% ×I
(nom)
+0.3V)
+0.3V)
≤
≤
≤
= 3.6V
≤
and/or V
≤
150ºC
= 8.33kΩ
= 16.9kΩ
= 16.9kΩ
= 90% steady state
2.0kV
V
V
V
V
V
IN
IN
IN
IN
IN
DxA
≤
≤
≤
≤
≈
≤
Dxx
5.5V
5.5V
5.5V
5.5V
15mA)
5.5V
DxB
= V
3
(nom.)
Condition
Falling
DxB
Operating Rating
(Notes 1, 2)
Thermal Properties
ESD Caution Notice
recommends that all integrated circuits be handled with
appropriate ESD precautions. Failure to observe proper ESD
handling techniques can result in damage to the device.
Input Voltage Range
LED Voltage Range
Junction Temperature (T
Ambient Temperature (T
(Note 6)
Junction-to-Ambient Thermal
Resistance (θ
(Note 7)
= V
IN
DxC
= C
BankA
BankB
= 0.4V; R
OUT
= 1.0µF; Specifications related to output current
JA
), SQA24A Package
SET
= 12.7kΩ; BankA = BankB = BankC =
A
J
(-9.5%)
(-7.7%)
) Range
) Range
18.2
19.2
0.89
Min
National Semiconductor
20.1
20.8
DxA
DxB
DxC
2.75
2.90
1.25
1.27
Typ
175
110
200
250
0.3
0.3
3.4
30
20
20
20
20
1
-30°C to +100°C
-30°C to +85°C
(+9.5%)
(+7.7%)
Max
22.0
22.4
3.32
1.57
2.7V to 5.5V
2.0V to 4.0V
1.7
1.4
5.4
www.national.com
41.3°C/W
Units
MHz
kHz
mA
(%)
mA
(%)
mA
mA
mV
mV
mA
µA
µs
%
Ω
V