MAX1981A Maxim Integrated Products, MAX1981A Datasheet - Page 3

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

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ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V
= 1.26V, ILIM = V
otherwise specified.)
On-Time (Note 1)
Minimum Off-Time (Note 1)
DDO Delay Time
SKIP Delay Time
BIAS AND REFERENCE
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+)
Reference Voltage
Reference Load Regulation
FAULT PROTECTION
Output Overvoltage
Protection Threshold
Output Overvoltage
Propagation Delay
Output Undervoltage
Protection Threshold
Output Undervoltage
Propagation Delay
Output Fault Blanking Time
Positioned CPU Core Power Supplies (IMVP-IV)
PARAMETER
Quick-PWM Master Controllers for Voltage-
CC
, SUS = D5 = D1= D0= S0 = S1 = S2 = B0 = GND, V
_______________________________________________________________________________________
CC
DD
CC
DD
CC
)
)
)
)
= V
DD
SYMBOL
t
OFF(MIN)
t
ΔV
BLANK
t
t
V
t
t
t
DDO
SKIP
I
I
I
OVP
= V
UVP
ON
CC
DD
REF
V+
REF
SHDN
V+ = 5V, V
(1000kHz)
V+ = 12V,
V
TON = GND (1000kHz)
TON = V
or 550kHz)
Measured from the time FB reaches the
voltage set by S0–S2, clock speed set by
R
Measured from the time when DDO is
asserted to the time in which the controller
begins pulse-skipping operation
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
I
Measured at FB with respect to unloaded
output voltage, DAC code = 0.7V to 1.708V
FB forced 2% above trip threshold
With respect to unloaded output voltage
DAC Code = 0.7V to 1.708V
FB forced 2% below trip threshold
The clock speed is set by R
= V
REF
FB
TIME
CC
CC
TON
= 1.2V
= V
= 4.5V to 5.5V, I
= -10µA to 100µA
= V
DD
CC
FB
, open or REF (200kHz, 300kHz,
= 0 or 5V
DPSLP
= 1.2V, TON = GND
CC
DD
CC
DD
CONDITIONS
, FB forced above the
, FB forced above the
, SHDN = GND
, SHDN = GND
= V
TON = REF (550kHz)
TON = open (300kHz)
TON = V
REF
BI
= V
D4
= 0
OAIN
= V
TIME
CC
D3
= (200kHz)
- = 5V, V
(Note 2)
= V
D2
FB
= 1V, V
= V
CSP
1.990
MIN
250
165
320
465
B2
-10
13
67
= V
= 2V. T
CSN
2.000
TYP
270
190
355
515
300
400
1.3
0.1
0.1
0.1
0.1
32
30
21
16
10
70
10
32
A
= V
= 0°C to +85°C, unless
OAIN+
2.010
MAX
+10
290
215
390
565
375
475
2.0
40
19
73
5
5
5
5
= V
NEG
UNITS
= V
clks
clks
clks
mA
mV
µA
µA
µA
µA
µA
ns
ns
ns
µs
µs
%
%
V
POS
3