MAX1981A Maxim Integrated Products, MAX1981A Datasheet - Page 2

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

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ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +30V
V
SYSPOK, IMVPOK, CLKEN to GND .........................-0.3V to +6V
DPSLP, SUS, D0–D5 to GND ...................................-0.3V to +6V
REF, ILIM, CSP, CSN to GND.....................-0.3V to (V
FB, POS, NEG, OAIN+, CC
B0–B2, S0–S2, TON,
DL, DDO, to PGND.....................................-0.3V to (V
DH to LX ....................................................-0.3V to (V
SHDN to GND...........................................................-0.3 to +18V
Quick-PWM Master Controllers for Voltage-
Positioned CPU Core Power Supplies (IMVP-IV)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, V
= 1.26V, ILIM = V
otherwise specified.)
2
PWM CONTROLLER
Input Voltage Range
DC Output Voltage Accuracy
Line Regulation Error
Input Bias Current
POS, NEG Common-Mode
Range
POS, NEG Differential Range
POS, NEG Offset Gain
POS, NEG Enable Time
TIME Frequency Accuracy
CC
OAIN- to GND.........................................-0.3V to (V
TIME to GND ..........................................-0.3V to (V
, V
_______________________________________________________________________________________
DD
to GND .....................................................-0.3V to +6V
PARAMETER
CC
, SUS = D5 = D1= D0= S0 = S1 = S2 = B0 = GND, V
CC
= V
I
SYMBOL
DD
POS,
A
I
= V
OFF
FB
I
NEG
SHDN
Battery Voltage, V+
V
V+ = 4.5V to 28V,
includes load
regulation error
V
FB
POS, NEG
DPSLP = GND
V
ΔV
100mV, DPSLP = GND
Measured from the time DPSLP goes low to
the time in which POS, NEG affect a change
in the set point (V
640kHz nominal, R
320kHz nominal, R
64kHz nominal, R
= V
CC
CC
POS
BST
CC
CC
CC
DD
FB
TON
, V
= 4.5V to 5.5V, V+ = 4.5V to 28V
/(V
- V
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
DD
POS
= V
NEG
DPSLP
- V
, DPSLP = GND
NEG
CONDITIONS
DAC
TIME
= V
TIME
TIME
), (V
BST to GND ..............................................................-0.3 to +36V
LX to BST..................................................................-6V to +0.3V
GND to PGND .......................................................-0.3V to +0.3V
REF Short-Circuit Duration .........................................Continuous
Continuous Power DIssipation
Operating Temperature Range .........................-40°C to +100°C
Junction Temperature ......................................................+150°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
)
BI
40-Pin 6mm
(derate 26.3mW/°C above +70°C) .............................2105mW
= 235kΩ
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
= 23.5kΩ
= 47kΩ
= V
D4
OAIN
= V
- V
NEG
D3
- = 5V, V
= V
) =
✕
6mm Thin QFN
D2
FB
= 1V, V
= V
CSP
-0.75
-1.25
-200
0.95
MIN
-3.0
-0.2
580
295
B2
4.5
58
-1
2
0
= V
= 2V. T
CSN
TYP
1.00
640
320
0.1
64
A
5
= V
= 0°C to +85°C, unless
OAIN+
+0.75
+1.25
+200
MAX
+3.0
+0.2
1.05
700
345
5.5
+1
28
70
2
= V
NEG
mV/mV
UNITS
= V
kHz
mV
mV
µA
µs
%
V
V
POS