LP3907-Q1 Datasheet, PDF (9/53 Pages) Texas Instruments – Dual High-Current Step-Down DC-DC And Dual Linear Regulator

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LP3907-Q1
SNVSA55A – DECEMBER 2014 – REVISED MAY 2015
7.8 I/O Electrical Characteristics
Unless otherwise noted: Limits apply over the entire junction temperature range for operation, T_J = −40°C to 125°C. ⁽¹⁾
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
V_IL
Input low level
V_IH
Input high level
0.4
V
1.2
(1) This specification is ensured by design.
7.9 Power-On Reset Threshold/Function (POR)
PARAMETER
TEST CONDITIONS
nPOR
nPOR = Power on reset forBuck1 and Default
Buck2
nPOR
threshold
VOL
Percentage of target voltage Buck1
or Buck2
Output level low
V_BUCK1 AND V_BUCK2 rising
V_BUCK1 OR V_BUCK2 falling
Load = IoL = 500 mA
MIN
TYP MAX UNIT
50
ms
94%
85%
0.23
0.5 V
7.10 I²C Interface Timing Requirements
Unless otherwise noted, V_IN = 3.6 V and T_J = 25°C.⁽¹⁾
ƒ_CLK
t_BF
t_HOLD
t_CLKLP
t_CLKHP
t_SU
t_DATAHLD
t_DATASU
T_SU
T_TRANS
Clock frequency
Bus-free time between start and stop
Hold time repeated start condition
CLK low period
CLK high period
Set-up time repeated start condition
Data hold time
Data set-up time
Set-up time for start condition
Maximum pulse width of spikes that
must be suppressed by the input filter
of both DATA & CLK signals
(1) This specification is ensured by design.
7.11 Typical Characteristics — LDO
T_A = 25°C unless otherwise noted.
See ⁽¹⁾
MIN NOM MAX UNIT
400 kHz
1.3
µs
0.6
µs
1.3
µs
0.6
µs
0.6
µs
0
µs
100
ns
0.6
µs
50
ns
2.00
1.50
1.00
0.50
0.00
-0.50
-1.00
-1.50
-2.00
-50 -35 -20 -5 10 25 40 55 70 85 100
V_IN = 3.6 V
TEMPERATURE (°C)
V_OUT = 2.6 V
100-mA Load
Figure 1. Output Voltage Change vs Temperature (LDO1)
2.00
1.50
1.00
0.50
0.00
-0.50
-1.00
-1.50
-2.00
-50 -35 -20 -5 10 25 40 55 70 85 100
V_IN = 3.6 V
TEMPERATURE (°C)
V_OUT = 2.6 V
100-mA Load
Figure 2. Output Voltage Change vs Temperature (LDO2)
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