Max781 pda/hand-held computer power controller, Typical operating characteristics – Rainbow Electronics MAX781 User Manual
Page 5
MAX781
PDA/Hand-Held Computer Power Controller
_______________________________________________________________________________________
5
TIMING CHARACTERISTICS (Note 1)
Note 1:
Guaranteed by design.
PARAMETER
MIN
TYP
MAX
UNITS
CE Assertion to DOUT Enable
120
ns
SCLK Low Pulse Width
125
ns
SCLK High Pulse Width
125
ns
SCLK Clock Period
400
ns
CE Deassertion to DOUT Disable
120
ns
DIN to SCLK Data Hold Time
DIN to SCLK Data Setup Time
125
ns
0
ns
SCLK to DOUT Valid Propagation Delay
30
200
ns
SYMBOL
t
DV
t
CL
t
CH
t
CP
t
TR
t
DS
t
DH
t
DO
SCLK Rising Edge to CE Deassertion
200
ns
CE Assertion to SCLK Rising-Edge
Setup Time
200
ns
CE High Pulse Width
300
ns
SCLK Rising Edge to CE Assertion
200
ns
t
CSH
t
CSS
t
CSW
t
CS0
CE Deassertion to SCLK Rising Edge
200
ns
t
CS1
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
10
1
0.1
0.01
0.001
2
4
6
8
10
12
14
16
18
NO LOAD SUPPLY CURRENT
MAX781-01
BATT INPUT VOLTAGE (V)
QUIESCENT CURRENT (mA)
(I
3OUT
=0mA)
SYNC=UVLO=AGND,
CHARGE=0
GDSEL_=0
MUX_=0
5ON=1
VPP_=0
SHUTDOWN MODE
LOW-POWER MODE
STANDBY MODE
OPERATE MODE (IDLE = 1)
OPERATE MODE (IDLE = 0)
10
1
CHARGER OUTPUT CURRENT
MAX781-03
CHARGER CODE (CHG6–CHG0 VALUE)
CURRENT INTO BATT (mA)
100
1000
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
3
7
15
31
127
63
mA
%
R4 = 0.2
Ω
SYNC = AGND
BATT = 7V TO 8V
VCHG = 12V