MAX1981A Maxim Integrated Products, MAX1981A Datasheet - Page 6

• Manufacturer Part Number: MAX1981A
• Description: (MAX1907A / MAX1981A) Quick-PWM Master Controllers
• Manufacturer: Maxim Integrated Products

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Quick-PWM Master Controllers for Voltage-
Positioned CPU Core Power Supplies (IMVP-IV)
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, V
= 1.26V, ILIM = V
otherwise specified.)
6
Input Voltage Range
DC Output Voltage Accuracy
POS, NEG Offset Gain
TIME Frequency Accuracy
On-Time (Note 1)
Minimum Off-Time (Note 1)
Quiescent Supply Current (V
Quiescent Supply Current (V
Quiescent Battery
Supply Current (V+)
Shutdown Supply Current (V
Shutdown Supply Current (V
Shutdown Battery
Supply Current (V+)
BIAS AND REFERENCE
_______________________________________________________________________________________
PARAMETER
CC
, SUS = D5 = D1= D0 = SO = S1 = S2 = B0 = GND, V
CC
DD
CC
DD
CC
)
)
)
)
= V
SYMBOL
DD
t
OFF(MIN)
A
t
I
I
I
= V
OFF
ON
CC
DD
V+
SHDN
Battery voltage, V+
V
V+ = 4.5V to 28V,
includes load
regulation error
ΔV
100mV, DPSLP = GND
640kHz nominal, R
320kHz nominal, R
64kHz nominal, R
V+ = 5V, V
(1000kHz)
V+ = 12V,
V
TON = GND (1000kHz)
TON = V
or 550kHz)
Measured at V
regulation point
Measured at V
regulation
Measured at V+
Measured at V
Measured at V
Measured at V+, SHDN = GND,
V
= V
CC
FB
CC
FB
TON
, V
= 1.2V
= V
/(V
DD
POS
= V
DD
CC
FB
, open, or REF (200kHz, 300kHz,
= 0 or 5V
DPSLP
- V
= 1.2V, TON = GND
CC
DD
CC
DD
NEG
CONDITIONS
, FB forced above the
, FB forced above the
, SHDN = GND
, SHDN = GND
TIME
= V
TIME
TIME
), (V
BI
= 235kΩ
D4
POS
DAC codes from
1.276V to 1.708V
DAC codes from
0.844V to 1.260V
DAC codes from
0.444V to 0.828V
TON = REF
(550kHz)
TON = open
(300kHz)
TON = V
(200kHz)
= 23.5kΩ
= 47kΩ
= V
= V
OAIN
- V
D3
NEG
CC
- = 5V, V
= V
) =
D2
= 1V, V
FB
= V
B2
CSP
-1.00
MIN
0.95
-1.5
-3.5
580
295
250
165
320
465
4.5
58
= 2V. T
2
= V
CSN
A
TYP
= -40°C to +100°C, unless
= V
OAIN+
+1.00
MAX
+1.5
+3.5
1.05
700
305
290
215
390
565
375
475
5.5
2.0
28
70
20
40
20
20
20
= V
NEG
mV/mV
UNITS
= V
kHz
mA
µA
µA
µA
µA
µA
ns
ns
ns
%
V
POS