H1563P Datasheet, PDF (1/8 Pages) Hi-Sincerity Mocroelectronics – HIGH-EFFICIENCY DC/DC CONVERTER

HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : HP200201
HS200207
Issued Date : 2000.10.01
Revised Date : 2002.07.12
Page No. : 1/8
H1563P / H1563S
HIGH-EFFICIENCY DC/DC CONVERTER
Description
The H1563 is a monolithic control circuit containing the primary functions required for DC to DC converters
and highside-sensed constant current source. The device consists of an internal temperature compensa-
ted reference, comparator, controlled duty cycle oscillator with an active current sense circuit, bootstrap-
ped driver, and high current output switch. This device is specifically designed to construct a constant
current source for battery chargers with a minimum number of external components. Bootstrapped driver
can drive the NPN output switch to saturation for higher eff-iciency and less heat dissipation. The H1563
can deliver 1.5A continuous current without requiring a heat sink.
Features
• 3V to 40V Input Voltage Operation
• Internal 2A Peak Current Switch
• 1.5A Continuous Output Current
• Bootstrapped Driver
• High Side Current Sense Capability
• High Efficiency (up to 90%)
• Internal ±2% Reference
• Low Quiescent Current at 1.6mA
• Frequency Operation from 100Hz to 100KHz
Applications
• Constant Current Source for Battery Chargers
• Saver for Cellular Phone
• Step-Down DC-DC Converter Module
Typical Application Circuit
Saver Circuit for Cellular Phone
R1
1K
D2
R2
C3
120
1uF
H1N4148
Vin
+
C1
220uF
CT
470pF
SC BST
SE
IS
TC VCC
GND FB
H1563
L
220uH
D1
H1N5821
D3
H1N5819
+ _Co
220uF
*RS
Io
C5 ⁺
10uF
RB
33K
RA
5.6K
*Io=300mV/RS
H1563P / H1563S
HSMC Product Specification