ltc3210 Linear Technology Corporation, ltc3210 Datasheet - Page 3

• Manufacturer Part Number: ltc3210
• Description: Main/cam Led Controller In 3mm ? 3mm Qfn
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
PARAMETER
Unused MLED Detection
Test Current
Threshold Voltage
CLED Current
LED Current Ratio (I
LED Dropout Voltage
CLED Current, 3-Bit Linear DAC
Charge Pump (CPO)
1x Mode Output Voltage
1.5x Mode Output Voltage
2x Mode Output Voltage
1x Mode Output Impedance
1.5x Mode Output Impedance
2x Mode Output Impedance
CLOCK Frequency
Mode Switching Delay
CPO Short Circuit Detection
Threshold Voltage
Test Current
ENC, ENM
V
V
I
I
ENC, ENM Timing
t
t
t
RM, RC
V
I
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Based on long-term current density limitations. Assumes an
operating duty cycle of ≤10% under absolute maximum conditions
for durations less than 10 seconds. Maximum current for continuous
operation is 300mA.
temperature range, otherwise specifi cations are at T
ENM = high, unless otherwise noted.
IH
IL
PW
SD
EN
RM
IL
IH
RM
, I
, V
RC
RC
CLED
/I
RC
)
CONDITIONS
MLED Tied to CPO
V
I
Mode Switch Threshold, I
1 ENC Strobe (FS)
7 ENC Strobes (FS/7)
I
I
I
V
V
CPO = 0V, ENM = ENC = Low
ENM = ENC = 3.6V
ENM = ENC = 0V
Minimum Pulse Width
Low Time to Shutdown (ENC and ENM = Low)
Current Source Enable Time
(ENC or ENM = High) (Note 5)
CLED
CPO
CPO
CPO
CPO
BAT
BAT
A
= 25°C.V
= 0mA
= 0mA
= 0mA
= 3.4V, V
= 3.2V, V
– V
= Full Scale
MLED
The
BAT
●
CPO
CPO
denotes the specifi cations which apply over the full operating
= 3.6V, C1 = C2 = C3 = C4 = 2.2μF, RM = 30.1k, RC = 24.3k,
= 4.6V (Note 4)
= 5.1V (Note 4)
Note 3: The LTC3210E is guaranteed to meet performance specifi cations
from 0°C to 70°C. Specifi cations over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 4: 1.5x mode output impedance is defi ned as (1.5V
2x mode output impedance is defi ned as (2V
Note 5: If the part has been shut down then the initial enable time is about
100μs longer due to the bandgap enable time.
CLED
= Full Scale
●
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●
6750
1.16
MIN
0.5
0.4
1.4
10
10
–1
60
50
50
4
BAT
7500
V
4.55
5.05
3.15
3.95
1.20
TYP
500
380
150
150
0.5
0.8
0.4
54
15
– V
BAT
CPO
LTC3210
)/I
BAT
8250
OUT
MAX
1.24
250
250
1.5
1.3
0.4
16
30
20
70
1
– V
.
CPO
)/I
UNITS
OUT
3210fa
3
MHz
A/A
mV
mA
mA
mA
ms
μA
μA
μA
μA
ns
μs
μs
.
Ω
Ω
Ω
V
V
V
V
V
V
V
V