N32khz electrical characteristics, Typical operating characteristics, Flash timer electrical characteristics (continued) – Rainbow Electronics MAX8982X User Manual
Page 19
Power-Management ICs for
ICERA E400/E450 Platform
MAX8982A/MAX8982X
19
Typical Operating Characteristics
(MAX8982A: V
IN1A
= V
IN1B
= 5V, MAX8982X: V
IN1A
= V
IN1B
= V
DDA
= V
DDB
= V
IN4
= 3.3V, C
REFBP
= 0.1µF, T
A
= -40°C to +85°C,
Circuits of Figures 2 and 3, unless otherwise noted. Typical values are at T
A
= +25°C.
Limits are 100% production tested at T
A
= +25NC,
unless otherwise noted. Limits over the temperature range are guaranteed by design.)
N32KHz ELECTRICAL CHARACTERISTICS
(MAX8982A: V
DD_
= +3.2V, MAX8982X: V
DD_
= +3.3V, V
BUCK2
= 1.8V, C
BUCK2
= 2.2FF, C
REFBP
= 0.1FF, T
A
= -40NC to +85NC,
unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 3)
Note 3: Limits are 100% production tested at T
A
= +25NC, unless otherwise noted. Limits over the temperature range are guaran-
teed by design.
Note 4: Guaranteed by design, not production tested.
FLASH TIMER ELECTRICAL CHARACTERISTICS (continued)
(MAX8982A: V
IN1A
= V
IN1B
= +5V and V
DD_
= +3.2V, MAX8982X: V
IN1A
= V
IN1B
= +3.3V and V
DD_
= +3.3V, C
REFBP
= 0.1FF,
T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 4, Figure 11)
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
Output High Voltage
Internal logic supply I
SOURCE
= 2mA
V
BUCK2
- 0.45V
V
Output Low Voltage
Internal logic supply I
SINK
= 2mA
0.45
V
Output Duty Cycle
30
50
70
%
Output Frequency Range
Including initial startup, 20% tolerance
25.6
32
38.4
kHz
Startup Time
From BUCK2 enable (Figure 4)
225
F
s
Edge Jitter (Note 4)
10
ns
SHUTDOWN CURRENT
vs. INPUT VOLTAGE (MAX8982A)
MAX8982A toc01
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5.0
4.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
4.0
5.5
SHUTDOWN CURRENT
vs. INPUT VOLTAGE (MAX8982X)
MAX8982A toc02
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5.0
4.5
3.5
4.0
0.5
1.0
1.5
2.0
3.0
2.5
3.5
4.0
0
3.0
5.5
NO LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (MAX8982A)
MAX8982A toc03
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5.0
4.5
120
140
160
180
200
220
240
260
280
300
BUCK3, OUT3 ON
ALL OTHER OUTPUTS OFF
100
4.0
5.5
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Programmable On-Time, t
ON
4-bit programmable in 25ms steps, same for each flash
timer
25
400
ms
25 (0000)
50 (0001)
75
.
.
400 (1111)