LM3560 Datasheet, PDF (5/42 Pages) Texas Instruments – LM3560 Synchronous Boost Flash Driver w/ Dual 1A High-Side Current Sources (2A Total Flash Current)

Symbol
Parameter
Conditions
Min
V_TRIP
f_SW
t_TIMEOUT
Comparator Trip
Configuration Register 1, bit4 = 1, 3.0V
Threshold
≤ V_IN ≤ 4.2V
Switching Frequency 3.0V ≤ V_IN ≤ 4.2V
Timeout Duration (Note
10), (Note 11)
3.0V ≤ V_IN ≤ 4.2V
0.97
1.8
−10%
Device Not Switching, V_OUT = 3V
I_Q
Quiescent Supply
Current
Device Switching, V_OUT = 4.5V
Indicate Mode, Message Indicator
Register, bits[2:0] = 111, 3.0V ≤ V_IN ≤
4.2V
I_SHDN
Shutdown Supply
Current
V_HWEN = GND, 3.0V ≤ V_IN ≤ 4.2V
I_STBY
V_{IN_TH}
V_{IN_FLASH_TH}
Standby Supply Current V_HWEN = V_IN , 3.0V ≤ V_IN ≤ 4.2V
VIN Monitor Threshold VIN Monitor Register = 0x01
VIN Flash Monitor
Threshold
VIN Monitor Register = 0x08
2.85
2.85
Flash to Torch LED TX_ Low to High,
t_TX
Current Settling Time I_LED1 + I_LED2 = 2A to 187.5 mA
Torch to Flash LED TX_ High to Low,
Current Settling Time I_LED1 + I_LED2 = 187.5mA to 2A
Time from when I_LED ADC Delay Register Bit [5] = 1
t_D
hits target until VLED ADC Delay Register Bit [5] = 0
data is available
ADC Delay Register Bits [4:0] = 0000
V_{F_ADC}
ADC Threshold
3.0V ≤ V_IN ≤ 4.2V, VLED Monitor
Register Bits [3:0] = 1111
4.05
HWEN, STROBE, TX1/TORCH/GPIO1, TX2/INT/GPIO2 Voltage Specifications
V_IL
Input Logic Low
2.7V ≤ VIN ≤ 4.2V
0
V_IH
Input Logic High
2.7V ≤ VIN ≤ 4.2V
1.2
Internal Pull Down
R_PD
Resistance on TX1,
TX2, STROBE
I²C-Compatible Voltage Specifications (SCL, SDA)
V_IL
Input Logic Low
2.7V ≤ VIN ≤ 4.2V
0
V_IH
Input Logic High
2.7V ≤ VIN ≤ 4.2V
1.2
V_OL
Output Logic Low
(SDA)
I_LOAD = 3mA, 2.7V ≤ VIN ≤ 4.2V
I²C-Compatible Timing Specifications (SCL, SDA) (Note 10), see Figure 18
f_SCL
t_RISE
t_FALL
t_LOW
SCL(Clock Frequency)
Rise Time of Both SDA
and SCL
Fall Time of Both SDA
and SCL
Low Period of SCL
Clock
0
20ns + 0.1 ×
C_BUS
20ns + 0.1 ×
C_BUS
1.3
t_HIGH
High Period of SCL
Clock
600
Hold Time for Start (or
t_HD;STA
Repeated Start)
600
Condition
t_SU;STA
Set-up Time for a
Repeated Start
600
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4
Typ
1
2
900
1.97
590
0.02
1.25
2.9
2.9
2
160
16
250
4.2
300
Max
1.03
2.2
+10%
1.25
2
2.95
2.95
Units
V
MHz
ms
µA
mA
µA
µA
V
V
µs
µs
4.35
V
0.4
V
V_IN
V
kΩ
0.4
V
V_IN
V
400
mV
400
kHz
300
ns
300
ns
µs
ns
ns
ns