Test Results Using Evaluation Board - Analog Devices EVAL-ADP1653EB Manual

EVAL-ADP1653EB

TEST RESULTS USING EVALUATION BOARD

Table 4. Current Limit—Typical Part, OUT = 6.9 V
V (V) Temp (°C) Current Limit (A)
BAT
2.9 −40 2.1
0 2.08
+25 2.03
+85 1.93
+125 1.86
3.6 −40 N/A
0 N/A
+25 N/A
+85 N/A
+125 N/A
1
CH1 1.00V
Figure 18. Soft Start Ramp, Two LEDs, VBAT = 3.6 V, T
1
CH1 2.00V
Figure 19. OUT Voltage—Timed Flash Mode, STR Glitch (Write 0 × 10 to Reg 1,
Glitch STR, Capture Transient on Scope and Measure Period) T
(Design = 410 ms, Measure = 412 ms)
Maximum Output
Current (mA),
Two LEDs
500
486
470
440
415
500
500
500
500
500
Δ: 2.76V
@: 6.38V
Δ: 143µs
@: 74.4µs
M40.0µs A CH1 4.76V
= 25°C
A
Δ: 760mV
@: 6.64V
Δ: 412ms
@: 412ms
M100ms A CH1 4.76V
= 25°C
A
1
2
3
4
CH1 5.00V
CH3 1.00A Ω CH4 200mA Ω
1
2
3
4
CH1 5.00V
CH3 1.00A Ω CH4 200mA Ω
86
84
82
80
78
76
74
72
70
100
Figure 22. Efficiency Measurements, L = D2812C-2R0 (Toko America, Inc.)
Rev. A | Page 14 of 20
CH2 5.00V M200µs A CH4
T 8µs
Figure 20. Tx Masking—0 V to 3.3 V
Channel 1— Input Voltage
Channel 2—Output Voltage
Channel 3—Input (Inductor) Current
Channel 4—Output Current
CH2 5.00V M200µs A CH4
T 8µs
Figure 21. Tx Masking—3.3 V to 0 V
Channel 1—Input Voltage
Channel 2—Output Voltage
Channel 3—Input (Inductor) Current
Channel 4—Output Current
V = 3.0V
IN
V = 3.2V
IN
150 200 250 300
LED CURRENT (mA)
Efficiency = P /P
LED IN
272mA
272mA
V = 4.2V
IN
V = 3.6V
IN
350 400