MAX1535 Maxim Integrated Products, MAX1535 Datasheet - Page 10

• Manufacturer Part Number: MAX1535
• Description: Highly Integrated Level 2 Smbus Battery Charger
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
Highly Integrated Level 2 SMBus
Battery Charger
(Circuit of Figure 1, V
10
-0.2
-0.4
-0.6
-0.8
-1.0
0.4
0.2
0
______________________________________________________________________________________
0
A: BATTERY VOLTAGE, 500mV/div, AC-COUPLED
B: V
C: V
D: CHARGE CURRENT, 2A/div
(BATTERY REMOVAL AND INSERTION)
B
CCV
CCI
C
, 500mV/div
, 500mV/div
2
LDO LOAD REGULATION
TRANSIENT RESPONSE
BATT INSERTED
-0.02
-0.04
-0.06
-0.08
-0.10
0.02
LDO CURRENT (mA)
(V
0
C
4
-40
IN
REF VOLTAGE ERROR vs. TEMPERATURE
4ms/div
DCIN
= 20V)
B
-20
BATT REMOVED
6
= 20V, T
0
TEMPERATURE (°C)
8
16.8VDC
MAX1535 toc01
B
20
A
C
= +25°C, unless otherwise noted.)
10
40
A
0V
D
0V
60
-0.002
-0.004
-0.006
-0.008
-0.010
0.010
0.008
0.006
0.004
0.002
80
0
8
A: ADAPTER INPUT VOLTAGE, 20V/div
B: V
C: V
D: V
100
CSSN
PDS
PDL
, 20V/div
, 20V/div
12
LOAD SWITCH CONTROL
, 20V/div
LDO LINE REGULATION
(ADAPTER INSERTION)
INPUT VOLTAGE (V)
16
200µs/div
20
Typical Operating Characteristics
24
MAX1535 toc02
100
90
80
70
60
50
40
0
28
EFFICIENCY vs. CHARGE CURRENT
A
0V
B
0V
C
0V
D
0V
(CONSTANT-VOLTAGE MODE)
2
-0.02
-0.04
-0.06
-0.08
-0.10
CHARGE CURRENT (A)
V
V
V
CHARGE
CHARGE
CHARGE
0
0
A: V
B: V
C: V
D: AC ADAPTER CURRENT, 5A/div
E: SYSTEM LOAD, 5A/div
F: CHARGE CURRENT, 5A/div
= 8.4V
= 12.6V
= 16.8V
4
BATT
CCS
CCI
C
SYSTEM LOAD TRANSIENT
, 500mV/div
100
B
, 500mV/div
, 500mV/div, AC-COUPLED
REF LOAD REGULATION
REF LOAD CURRENT (µA)
6
200
400µs/div
B
300
8
C
400
MAX1535 toc03
C
B
500
A
0V
D
0V
E
0V
F