MAX8599ETE+ Maxim Integrated Products, MAX8599ETE+ Datasheet - Page 6

• Manufacturer Part Number: MAX8599ETE+
• Description: IC CNTRLR STP DWN LDO 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8599ETE+

• Pwm Type: Controller
• Number Of Outputs: 1
• Frequency - Max: 1.4MHz
• Duty Cycle: 99.5%
• Voltage - Supply: 4.5 V ~ 28 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-TQFN Exposed Pad
• Frequency-max: 1.4MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Dropout, Wide-Input-Voltage,
Step-Down Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V
V
unless otherwise noted.) (Note 1)
Note 1: Limits to -40°C are guaranteed by design and characterization.
(Circuit of Figure 4, T
6
OV AND UV FAULT COMPARATORS
Upper FB Fault Threshold (OV)
Lower FB Fault Threshold (UV)
POWER-OK OUTPUT (POK) (MAX8598/MAX8599 only)
Lower FB POK Threshold
POK Output Low Level
POK Output High Leakage
LX
V+
1.210
1.205
1.200
1.195
1.190
100
95
90
85
80
75
70
65
60
_______________________________________________________________________________________
- 0.2V, V
= V
10.0
0.1
VL
V
EFFICIENCY vs. LOAD CURRENT
10.5
OUT
PARAMETER
V
V
= V
OUT
OUT
FB
= 11.5V
11.0
CIRCUIT OF FIGURE 1
= 6V
= 9V
AVL
vs. INPUT VOLTAGE
= 0.65V, GND = PGND = 0V, C
OUTPUT VOLTAGE
LOAD CURRENT (A)
11.5
= V
A
V
12.0
IN
= +25°C, 500kHz switching frequency, V
EN
1
(V)
I
I
LOAD
LOAD
= V
12.5
= 0A
= 20A
REFIN
13.0
13.5
= 5V, V
Rising edge, hysteresis = 15mV (MAX8599 only)
Falling edge, hysteresis = 15mV
FB falling, hysteresis = 20mV
I
V
SINK
POK
14.0
10
= 2mA
= 5.5V
BST
V
100
V
OUT
90
80
70
60
50
40
30
AVL
V
I
= 6V, V
SS
LX
IN
1
= 0.01µF, R
V
OUT
EFFICIENCY vs. LOAD CURRENT
LX
= 3.3V
POWER-UP WAVEFORMS
CIRCUIT OF FIGURE 2
= 1V, C
CONDITIONS
LOAD CURRENT (A)
V
OUT
FREQ
V
IN
OUT
= 1.2V
2ms/div
10
VL
= 12V, unless otherwise noted.)
= 1.8V
V
= 20kΩ, T
= 4.7µF, C
OUT
Typical Operating Characteristics
= 2.5V
MAX8597 toc05
A
REFOUT
= -40°C to +85°C, typical values are at T
100
5V/div
10A/div
1V/div
10V/div
= 1µF, V
1.210
1.205
1.200
1.195
1.190
V
I
OUT
AVL
V
I
LX
IN
AIN-
0
2
MIN
115
67
85
= V
POWER-DOWN WAVEFORMS
4
AOUT
vs. LOAD CURRENT
OUTPUT VOLTAGE
6
TYP
8
, V
I
2ms/div
LOAD
AIN+
10
(A)
12
MAX
120
0.4
= 2.5V, V
73
90
5
14
A
16
MAX8597 toc06
= +25°C,
UNITS
18
ILIM
µA
%
%
%
V
20
10A/div
1V/div
5V/div
10V/div
=