LMZ21700_15 Datasheet, PDF (6/37 Pages) Texas Instruments – LMZ21700 650 mA SIMPLE SWITCHER® Nano Module with 17 V Maximum Input Voltage

LMZ21700
SNVS872C – AUGUST 2012 – REVISED NOVEMBER 2014
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Electrical Characteristics⁽¹⁾ (continued)
Limits apply over the recommended operating junction temperature (T_J) range of -40 °C to +125 °C, unless otherwise stated.
Minimum and Maximum limits are specified through test, design or statistical correlation. Typical values represent the most
likely parametric norm at T_J = 25 °C, and are provided for reference purposes only. Unless otherwise stated the following
conditions apply: V_IN = 12 V.
PARAMETER
TEST CONDITIONS
MIN ⁽¹⁾
TYP ⁽²⁾
MAX⁽¹⁾ UNIT
V_OUT
Line regulation
3 V ≤ V_IN ≤ 17 V, V_OUT = 3.3 V, I_OUT
= 650 mA
0.02 %
/V
PWM mode operation
SYSTEM CHARACTERISTICS
η
Full Load Efficiency
V_OUT = 3.3 V, I_OUT = 650 mA
Light Load Efficiency
V_OUT = 3.3 V, I_OUT = 1 mA
88 %
72 %
7.6 Typical Characteristics
Unless otherwise specified the following conditions apply: V_IN = 12 V, T_A = 25 °C
100
2-LAYER 70 µm (2 oz) Cu
90
4-LAYER 70 µm (2 oz) Cu
80
70
60
50
40
30
20
0
5
10
15
20
Copper Area (cm²)
D012
Figure 2. Package Thermal Resistance vs. Board Copper
Area, No Air Flow
0.5
VIN = 3.3 V
VIN = 5 V
0.4
VIN = 9 V
VIN = 12 V
VIN = 15 V
VIN = 17 V
0.3
0.5
VIN = 3.3 V
VIN = 5 V
0.4
VIN = 9 V
VIN = 12 V
VIN = 15 V
VIN = 17 V
0.3
0.2
0.1
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Load Current (A)
005
V_OUT = 1.2 V
T_A = 85 ºC
Figure 3. Power Dissipation
0.5
VIN = 3.3 V
VIN = 5 V
0.4
VIN = 9 V
VIN = 12 V
VIN = 15 V
VIN = 17 V
0.3
0.2
0.2
0.1
0.1
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Load Current (A)
D006
V_OUT = 1.8 V
T_A = 85 ºC
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Load Current (A)
D007
V_OUT = 2.5 V
T_A = 85 ºC
Figure 4. Power Dissipation
Figure 5. Power Dissipation
6
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