Owner's manual

MAX8760
Dual-Phase, Quick-PWM Controller for AMD
Mobile Turion 64 CPU Core Power Supplies
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V
CC
= V
DD
= V
SHDN
= V
SKIP
= V
S0
= V
S1
= 5V, V
FB
= V
CMP
= V
CMN
= V
CSP
= V
CSN
= 1.3V, OFS =
SUS = GNDS = D0–D5 = GND, T
A
= 0°C to +85°C, unless otherwise specified. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
D0–D5 Logic Input Low Voltage 0.8 V
D0–D5 Input Current D0–D5 -2 +2 µA
High
V
CC
-
0.4
Open
3.15 3.85
REF
1.65 2.35
Four-Level Input Logic Levels TON, S0 and S1
Low 0.4
V
Four-Level Input Current TON, S0 and S1 forced to GND or V
CC
-3 +3 µA
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, V
CC
= V
DD
= V
SHDN
= V
SKIP
= V
S0
= V
S1
= 5V, V
FB
= V
CMP
= V
CMN
= V
CSP
= V
CSN
= 1.3V, OFS =
SUS = GNDS = D0–D5 = GND, T
A
= -40°C to +100°C, unless otherwise specified.) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
PWM CONTROLLER
Battery voltage, V+ 4 28
Input Voltage Range
V
CC
, V
DD
4.5 5.5
V
DAC codes ≥ 1V -13
+13
DC Output Voltage Accuracy
(Note 2)
V+ = 4.5V to 28V,
includes load
regulation error
DAC codes from
0.375V to 1V
-20
+20
mV
OFS Input Range 02V
∆V
OUT
/∆V
OFS;
∆V
OFS
= V
OFS,
V
OFS
= 0 to 1V
-0.131 -0.115
OFS GAIN A
OFS
∆V
OUT
/∆V
OFS;
∆V
OFS
= V
OFS
- V
REF,
V
OFS
= 1V to 2V
-0.131 -0.115
V/V
GNDS Gain A
GNDS
∆V
OUT
/∆V
GNDS
0.94 1.01
V/V
1000kHz nominal, R
TIME
= 15kΩ
880 1120
500kHz nominal, R
TIME
= 30kΩ
450 550
TIME Frequency Accuracy f
TIME
250kHz nominal, R
TIME
= 60kΩ
220 280
kHz
TON = GND
(550kHz)
150 210
TON = REF
(300kHz)
315 395
TON = open
(200kHz)
470 580
On-Time (Note 3) t
ON
V+ = 12V,
V
FB
= V
CCI
= 1.2V
TON = V
CC
(100kHz)
910 1150
ns
TON = GND
380
Minimum Off-Time (Note 3)
t
OFF
(
MIN
)
TON = V
CC
, open, or REF
490
ns