Typical operating characteristics – Rainbow Electronics MAX1692 User Manual
Page 4
1.74
1.76
1.80
1.78
1.82
1.84
0
400
300
200
100
500 600 700 800 900
OUTPUT VOLTAGE vs.
LOAD CURRENT
MAX1692-10
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
V
IN
= 2.7V
V
OUT
= 1.8V
R1 = 138k
Ω
R2 = 301k
Ω
MAX1692
Low-Noise, 5.5V-Input,
PWM Step-Down Regulator
4
_______________________________________________________________________________________
0
200
100
400
300
500
600
0
300
450
150
600
750
900
DROPOUT VOLTAGE vs.
LOAD CURRENT
MAX1692-01
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
V
OUT
= 2.5V
V
OUT
= 3.3V
95
50
1
1000
100
10
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 3.3V)
65
55
85
75
100
70
60
90
80
MAX1692-02
LOAD CURRENT (mA)
EFFICIENCY (%)
V
IN
= 5.0V
V
IN
= 3.6V
LIM = IN
R1 = 505k
Ω
R2 = 301k
Ω
95
50
1
1000
100
10
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 2.5V)
65
55
85
75
100
70
60
90
80
MAX1692-03
LOAD CURRENT (mA)
EFFICIENCY (%)
V
IN
= 5.0V
V
IN
= 2.7V
V
IN
= 3.6V
LIM = IN
R1 = 309k
Ω
R2 = 301k
Ω
95
50
1
1000
100
10
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 1.8V)
65
55
85
75
100
70
60
90
80
MAX1692-04
LOAD CURRENT (mA)
EFFICIENCY (%)
V
IN
= 2.7V
V
IN
= 5.0V
V
IN
= 3.6V
LIM = IN
R1 = 138k
Ω
R2 = 301k
Ω
0
1.5
1.0
0.5
2.5
2.0
4.5
4.0
3.5
3.0
5.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
BATTERY INPUT CURRENT vs.
INPUT VOLTAGE
MAX1692-07
INPUT VOLTAGE (V)
BATTERY INPUT CURRENT (mA)
SYNC/PWM = IN
V
OUT
= 3.3V
V
OUT
= 1.8V
V
OUT
= 2.5V
1.2
1.21
1.205
1.225
1.22
1.215
1.245
1.24
1.235
1.23
1.25
0
300
100 200
400 500 600 700 800 900 1000
FEEDBACK VOLTAGE
vs. LOAD CURRENT
MAX1692-05
LOAD CURRENT (mA)
FB VOLTAGE (V)
V
IN
= 5.0V
R1 = 309k
Ω
R2 = 301k
Ω
SYNC/PWM = GND
LIM = IN
LIM = GND
60
70
65
80
75
95
90
85
100
2.7
3.5
3.1
3.9
4.3
4.7
5.1
5.5
BATTERY INPUT CURRENT vs.
INPUT VOLTAGE
MAX1692-06
INPUT VOLTAGE (V)
BATTERY INPUT CURRENT (
µ
A)
V
OUT
= 1.8V
SYNC/PWM = GND
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
1.0
1.5
2.0
2.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
BATTERY INPUT CURRENT vs. INPUT
VOLTAGE AND TEMPERATURE
MAX1692-09
INPUT VOLTAGE (V)
BATTERY INPUT CURRENT (mA)
V
OUT
= 1.8V
SYNC/PWM = IN
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
Typical Operating Characteristics
(SYNC/PWM = GND, circuit of Figure 2, L = Sumida CD43-100, T
A
= +25°C, unless otherwise noted.)