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MAX629C/D Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX629C/D
Description  28V, Low-Power, High-Voltage, Boost or Inverting DC-DC Converter
PDF  12 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX629C/D Datasheet(HTML) 3 Page - Maxim Integrated Products

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(SHDN = VCC , CREF = 0.1μF, TA = +25°C, unless otherwise noted.)
(VCC = +5V, CREF = 0.1μF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note1)
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
Note 2: The IC itself requires a supply voltage between +2.7V and +5.5V; however, the voltage that supplies power to the inductor
can vary from 0.8V to 28V, depending on circuit operating conditions.
Note 3: For reference currents less than 10μA, a 0.1μF reference-bypass capacitor is adequate.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REF Load Regulation
IREF = 0µA to 100µA, CREF = 0.47µF (Note 3)
10
25
mV
Line Regulation
Circuit of Figure 2, VOUT = 24V, VCC = 3V to
5.5V, ILOAD = 5mA
0.2
%/V
Load Regulation
Circuit of Figure 2, VOUT = 24V, VCC = 5V, ILOAD
= 0mA to 5mA
0.15
%
Thermal Shutdown Threshold
Die temperature
150
°C
100
60
0.1
100
EFFICIENCY vs. LOAD CURRENT
(VOUT = +12V)
70
65
95
85
90
LOAD CURRENT (mA)
1
10
80
75
C
B
A
VOUT = 12V,
ISET = VCC or GND
A: VIN = 9V
B: VIN = 5V
C: VIN = 3V
100
50
0.1
100
EFFICIENCY vs. LOAD CURRENT
(VOUT = -12V)
65
60
55
95
80
85
90
LOAD CURRENT (mA)
1
10
75
70
A
A = VIN = 5V, ISET = VCC
B = VIN = 5V, ISET = GND
C = VIN = 3V, ISET = VCC
D = VIN = 3V, ISET = GND
D
B, C
300
0
0
20
MAXIMUM LOAD CURRENT vs.
INPUT VOLTAGE (VOUT = +24V, +12V)
50
250
200
INPUT VOLTAGE (V)
8
12
4
16
150
100
A
B
C
D
A: VOUT = 12V,
ISET = VCC
B: VOUT = 12V,
ISET = GND
C: VOUT =24V,
ISET = VCC
D: VOUT = 24V,
ISET = GND
90
0
0
20
MAXIMUM LOAD CURRENT vs. INPUT VOLTAGE
(VOUT = -18V, -12V)
30
20
10
80
60
70
INPUT VOLTAGE (V)
4
8
12
16
50
40
C
A
A: VOUT = -12V, ISET = VCC
B: VOUT = -18V, ISET = VCC
C: VOUT = -12V, ISET = GND
D: VOUT = -18V, ISET = GND
D
B
100
60
0.1
100
EFFICIENCY vs. LOAD CURRENT
(VOUT = +24V)
65
70
95
90
85
LOAD CURRENT (mA)
1
10
80
75
D
D: VIN = 5V, ISET = GND
E: VIN = 3V, ISET = VCC
F: VIN = 3V, ISET = GND
VOUT = 24V
A: VIN = 12V, ISET = VCC
B: VIN = 12V, ISET = GND
C: VIN = 5V, ISET = VCC
E, F
C
B
A
100
50
0.1
100
EFFICIENCY vs. LOAD CURRENT
(VOUT = -18V)
65
60
55
95
80
85
90
LOAD CURRENT (mA)
1
10
75
70
C
A
A: VIN = 12V, ISET = VCC
B: VIN = 12V, ISET = GND
C: VIN = 5V, ISET = VCC or GND
D: VIN = 3V, ISET = VCC or GND
B
D
www.maximintegrated.com
Maxim Integrated │ 3
MAX629
28V, Low-Power, High-Voltage,
Boost or Inverting DC-DC Converter
Electrical Characteristics (continued)
Typical Operating Characteristics



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