Rainbow Electronics MAX8760 - Manual (Page 6)

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 0 2 V
∆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 = 15k Ω 880 1120
500kHz nominal, R TIME = 30k Ω 450 550 TIME Frequency Accuracy f TIME
250kHz nominal, R TIME = 60k Ω 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