HT7718S Datasheet, PDF (7/29 Pages) Holtek Semiconductor Inc – 100mA PFM Synchronous Step-up DC/DC Converter

HT77xxS
Typical Performance Characteristics
(L use wire wound chip power inductor)
HT7750S
6
100%
5.2
80%
4.4
60%
3.6
VIN=3.0V
VIN=2.0V
VIN=1.5V
2.8
VIN=1.2V
2
0
50
100
150
200
250
300
Output Current (mA)
Fig 1. HT7750S Output Voltage vs. Output Current
40%
20%
0%
0
VIN=3.0V
VIN=2.0V
VIN=1.5V
VIN=1.2V
50
100
150
200
250
300
Output Current (mA)
Fig 2. HT7750S Efficiency vs. Output Current
1.2
0.9
Start-up
Hold-on
0.6
0.3
0
0
5
10
15
20
Output Current (mA)
Fig 3. HT7750S Start-up & Hold-on Voltage
250
200
150
VIN=3.0V
VIN=2.0V
100
VIN=1.5V
VIN=1.2V
50
0
0
50
100
150
200
250
300
Output Current (mA)
Fig 4. HT7750S Ripple Voltage vs. Output Current
Fig 5. HT7750S Load Transient Response
(L= 10μH, C_IN= C_OUT= 10μF, V_IN= 3.0V)
Fig 6. HT7750S Line Transient Response
(L= 10μH, C_IN= C_OUT= 10μF, V_IN= 3.0V)
Rev. 1.00
7
February 22, 2012