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 Fs
Edge Jitter (Note 4) 10 ns
SHUTDOWN CURRENT
vs. INPUT VOLTAGE (MAX8982A)
MAX8982A toc01
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5.04.5
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)
5.04.53.5 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)
5.04.5
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)
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